121results about How to "Increase the loudness" patented technology

An indication of the loudness of an audio signal containing speech and other types of audio material is obtained by classifying segments of audio information as either speech or non-speech. The loudness of the speech segments is estimated and this estimate is used to derive the indication of loudness. The indication of loudness may be used to control audio signal levels so that variations in loudness of speech between different programs is reduced. A preferred method for classifying speech segments is described.

A digital audio processor comprises at least one digital audio sample mapping module and produces a sequence of output digital audio sample values by applying a quasi time-invariant transfer function to each input digital audio sample value, the transfer function being arranged so that a ratio of root mean square signal level to peak signal magnitude is lower for the input digital audio signal than for a corresponding portion of the output digital audio signal.

In some embodiments, a method and system for controlling distortion of the output of a miniature speaker by attenuating critical frequency band of the input signal to be reproduced, using tuning parameters that have been predetermined where the critical frequency band is a frequency range of the speaker's frequency response in which Total Harmonic Distortion (THD) peaks. The distortion control is performed in a manner which allows an increase in the average loudness of the speaker's output without significantly increasing distortion. The tuning parameters include a center frequency and a bandwidth of the critical frequency band, and a power threshold value. In some embodiments, the system is a loudness maximizer configured to limit distortion of a speaker's output by limiting distortion in a critical frequency band using predetermined control parameters, and limit the dynamic range of the output signal and increase its perceived overall average loudness level.

A water sensor and alarm system for storage water heaters comprising an alarm housing, embedded battery, annunciator, and two bottom exposed fluid sensors separated by a stand-off. The system is designed for prompt owner notification when fluid is detected adjacent to a hot water heater tank. Notification is audible, and optionally may be in the form of remote notification, such as but not limited to a signal transmitted to the home security device connected to a 24-hour security monitoring network, or a smart phone, tablet, or other smart device. The alarm housing can be easily and quickly mounted to the side of the water heater tank. Ultra low power consumption is an important benefit provided by the alarm system, which continues during low battery warnings and water detection alarming. Also, the audible alarm may optionally include a boost circuit to amplify annunciator loudness, but at a tradeoff with conserving power.

An audible location alarm is generated from an ear-level device of a type comprising a memory, a microphone and a speaker, each coupled to a processor. Communication is established between the ear-level device and a companion device, the companion device having an interface, a display associated with the user interface, and an audible location alarm program stored therein. The audible location alarm program is initiated. An audible location alarm signal is transmitted to the ear-level device, thereby providing instruction to the ear-level device to broadcast an audible location alarm through the speaker of the ear level device until detection of an end event.

A cochlear implant processing strategy increases speech clarity and provides higher temporal performance. The strategy determines the power spectral component within each channel, and dynamically selects or de-selects the channels through which a stimulation pulse is provided as a function of whether the spectral power of the channel is high or low. “High” and “low” are estimated relative to a selected spectral power, for example. The selected spectral power can be estimated by signal average or mean, or by other criteria. Once a selection of the channels to stimulate has been made, the system can decide that only those channels are stimulated, and stimulation is removed from the other channels. The selected channels are the ones on which the spectral power is above the mean of all the available channels. Fewer channels are stimulated at any time and the contrast of the stimulation is enhanced. Also, the temporal resolution increases as the number of channels that must be stimulated on a given frame decreases. This way, the channels which are presented to the patient are fewer in number and contain more temporal information.

The present invention is directed to a transducer module, which includes an actuator that is directly or indirectly coupled to a vibration plate. The transducer module includes a plastic damper that elastically secures the vibration plate to a frame.

The invention discloses a sound production device and electronic equipment. The sounding device comprises a magnetic circuit system; The first vibration system comprises a first vibrating diaphragm and a first voice coil arranged on the first vibrating diaphragm, and the first voice coil is located on one side of the magnetic circuit system in the vibration direction; The second vibration system comprises a second vibration film and a second voice coil arranged on the second vibration film, the second voice coil is located on the other side of the magnetic circuit system in the vibration direction, and the first vibration system and the second vibration system vibrate and produce sound at the same time and produce sound in a sound production hole of the electronic equipment provided with the sound production device; And the phase difference of sound signals generated by the first vibration system and the second vibration system in the frequency band before 3kHz of the sounding hole isbetween [0, / 2].

The invention provides a sound effect adjusting method and device and a television set. According to the sound effect adjusting method, through dividing the volume of electronic equipment into preset intervals, according to the corresponding relation between an audio frequency response curve and an electric frequency response curve and the relation between the audio frequency response curve and a standard sound pressure curve of each preset interval, the gain value and Q value of each preset interval at a corresponding frequency point are obtained, the compensation of the gain value is carried out on a frequency band range where the corresponding frequency point of each preset interval is located according to the Q value, problems of amplitude limiting distortion and dynamic range shortage caused by a condition that different volumes output a same power in a large volume are effectively improved, and thus a sound effect with increased loudness and no distortion can be continuously obtained when the volume of electronic equipment is increased to the maximum.

The invention relates to the technical field of noise reduction, and discloses a mobile terminal and a method for reducing audio noise. In the present invention, the mobile terminal includes: an audio power amplifier, a loudspeaker, a microphone, and a codec chip; wherein the codec chip collects the first audio signal, and the microphone collects the second audio signal and outputs it to the codec chip; The first noise signal and the second noise signal are extracted from the first audio signal and the second audio signal, and output to the audio power amplifier; the audio power amplifier performs compensation processing on the first audio signal according to the first noise signal and the second noise signal. The embodiments of the present invention can effectively suppress the noise on the audio line of the mobile terminal and the audio noise played by the speaker, improve the sound quality of the output audio and the subjective experience of the human ear, and further improve the user experience.

The invention discloses an intelligent head-mounted device, and the device comprises a lens and a leg part, the lens is connected with the leg part, and the leg part is internally provided with a cavity; the sound production device is arranged in the cavity, and the cavity is divided into a front sound cavity and a rear sound cavity by the sound production device; the sound outlet hole is formed in the leg part and is communicated with the front sound cavity; the main sound leakage hole and the auxiliary sound leakage hole are formed in the leg part, and the main sound leakage hole and the auxiliary sound leakage hole are communicated with the rear sound cavity; the positions of the sound outlet hole, the main sound leakage hole and the auxiliary sound leakage hole are configured as follows: when a wearer wears the intelligent head-mounted device, the sound outlet hole and the auxiliary sound leakage hole are located at the front side of the auricle of the wearer, and the main sound leakage hole is located at the rear side of the auricle of the wearer.

An electroacoustical apparatus and method is described that alters the output properties of an audio device to improve the sound properties for both hearing impaired and normal hearing listeners. The device includes a coil element of specific design and may incorporate digital signal processing techniques to modify audio signal output. The electrical device and method of processing provides for the beneficial alteration of sound waves to an audio signal, and further modification of the audio signal to provide for improved loudness and clarity characteristics. The improved characteristics provide for greater intelligibility of the audio signal to persons with hearing impairments and to persons with normal hearing.

The invention provides an audio output module and method, and a terminal device. The audio output module comprises an audio coding and decoding device, two audio signal driving circuits, a conventional loudspeaker and a piezoelectric sensor, wherein the input ends of the two audio signal driving circuits are connected with the audio signal output end of the audio coding and decoding device; the output end of the first audio signal driving circuit is connected with the input end of the piezoelectric sound sensor; the first audio signal driving circuit is used for driving the piezoelectric sensor to output sound information; the output end of the second audio signal driving circuit is connected with the input end of the conventional loudspeaker; and the second audio signal driving circuit is used for driving the conventional loudspeaker to output the sound information. By adopting the audio output module provided by the invention, the loudness and sound effect of a playback sound of the terminal device can be improved, so that the hearing experience of the terminal device is improved.

A method, system and computer readable medium for increasing the audio perceptual loudness includes shifting at least one frequency of a first audio signal to create a second audio signal so as to increase the audio perceptual loudness. The power level of the second audio signal is not more than a power level of the first audio signal. The method also includes generating high-audio perceptual loudness tone alert sequences based on psychoacoustic and audiometric data. It further includes acquiring a listener's threshold audio profile; adding the listener's audio profile to the loudness sensitivity curve for producing the listener's tonal sensitivity curve; determining a required dB scaling for critical band tones from the listener's tonal sensitivity curve; normalizing the tonal sensitivity curve for creating a decibel curve; selecting a frequency range of the tones by using the tonal sensitivity curve; and spacing the sequence of tones along a critical band scale.

In some embodiments, a method and system for controlling distortion of the output of a miniature speaker by attenuating critical frequency band of the input signal to be reproduced, using tuning parameters that have been predetermined where the critical frequency band is a frequency range of the speaker's frequency response in which Total Harmonic Distortion (THD) peaks. The distortion control is performed in a manner which allows an increase in the average loudness of the speaker's output without significantly increasing distortion. The tuning parameters include a center frequency and a bandwidth of the critical frequency band, and a power threshold value. In some embodiments, the system is a loudness maximizer configured to limit distortion of a speaker's output by limiting distortion in a critical frequency band using predetermined control parameters, and limit the dynamic range of the output signal and increase its perceived overall average loudness level.

A differential audio amplifier system and a related system to generate an output signal free or with only very limited clipping are disclosed. It provides a solution to solve the problem of limited electrical speaker amplifier output power available (e.g. inside battery driver applications). A differential speaker amplifier has positive and negative supply rails. In a first embodiment of the disclosure the negative supply rail is connected to the output of an inverting buck-boost converter and the positive supply rail is directly connected to VSS voltage. In a second embodiment of the disclosure the positive supply rail is connected to the output of a buck-boost converter and the negative supply rail is directly connected to a positive battery voltage.

A blind spot targeting system for establishing a cutting point includes a locator with a housing having an indicator and a signal-sensing device. The housing has a hole therethrough, and the indicator is in electronic communication with the signal-sensing device for indicating a cutting point on a first side of a structure. A transmitter is also included, which has a complementary hole therethrough. The transmitter is for placement on a second side of the structure for emitting a signal, which the signal-sensing device senses. The indicator in communication with the signal-sensing device indicates alignment of the hole and the complementary hole to establish the cutting point for cutting through the hole into the first side of a structure and possibly through the second side of the structure in a direction of the complementary hole.

A vacuum tube power amplifier with a user-operable switch and a single output transformer which selectively provides push-pull or single ended configurations for driving a loudspeaker.

A vacuum tube power amplifier with a user-operable switch and a single output transformer which selectively provides push-pull or single ended configurations for driving a loudspeaker.

The invention discloses a portable audio playback device and a related mobile multimedia playing device. A plurality of micro-speaker monomers are arranged on a housing of the portable audio playback device, a plurality of micro-speaker monomers form a speaker array, the housing comprises at least one largest surface and a plurality of side surfaces, and a radiation surface of the speaker array is one or a plurality of side surfaces. Compared with the prior art, the provided portable audio playback device utilizes the micro-speaker array and can simultaneously emit sound signals from one or a plurality of radiation surfaces, avoid the problem that a sound field is not ideal due to high-frequency directivity, expand the sound field, broaden a sound image, enhance the stereo effect, further improve the overall sound effect of the device and lead the sound effect to be in line with music playback.

The invention relates to a magnetic diaphragm, which is arranged in an electro-acoustic converter. The magnetic diaphragm is provided with a diaphragm substrate, a magnetic material is deposited on the diaphragm substrate by using a film deposition method to form a magnetic layer, therefore, the diaphragm substrate has magnetic property as the magnetic layer is arranged, so that magnetic representation is generated between the magnetic diaphragm and a magnetic circuit arranged in the electro-acoustic converter.

Disclosed is a human sensing back-up alarm system capable of generating a loud alarm sound for a predetermined period of time using a speaker to protect humans or vehicles if the humans or vehicles are detected behind construction equipment or a vehicle when the construction equipment or the vehicle backs up, and generating a low alarm sound if the humans or vehicles are not detected behind the construction equipment or the vehicle, thereby effectively preventing accidents while minimizing ambient noise and noise pollution. The human sensing back-up alarm device includes a PCB control part for controlling an alarm sound, a human sensing part for electrically sensing an optical signal, and a speaker part for converting an electric signal into a mechanical signal. The PCB control part includes a clock generator for generating the alarm sound, a clock divider for dividing clocks generated from the clock generator, a terminal unit, a loudness control unit for adjusting the loudness of the alarm sound, a non-continuous sound control unit for generating a non-continuous sound, a speaker drive unit for driving the speaker part and a power source for stabilizing power applied to a vehicle.

The invention discloses a volume adjustment device, method and related equipment, and relates to the technical field of electronic information. It aims to solve the problem in the prior art that it is difficult to ensure that the sound has sufficient strength and texture and contains less noise. The device includes: a first gain adjustment unit, configured to reduce the strength of the audio signal to a first preset strength within a first preset time when the strength of the audio signal is greater than a first threshold; A gain adjustment unit, connected in series with the first gain adjustment unit, configured to reduce the intensity of the audio signal to a first threshold within a second preset time when the intensity of the audio signal is greater than a second threshold Two preset strengths; wherein, the first threshold is greater than the second threshold; the first preset time is shorter than the second preset time.

A calling method and communication terminal, the method comprising: after a communication terminal receives a trigger operation in a special calling mode, the sound output device of the communication terminal is set to be in a sound output state; and a first sound receiving device in the communication terminal for receiving sound produced by a user is set as a secondary sound receiving device, and a second sound receiving device for reducing noise is set as a primary sound receiving device, the primary sound receiving device being used to receive the sound produced by the user, and the secondary sound receiving device being used to reduce noise.

The invention relates to an audio data processing method and device, and a mobile terminal. The audio data processing method comprises extracting first volume corresponding to first track audio data and second volume corresponding to second track audio data from first audio data; acquiring the amplification coefficient of the first track audio data and the attenuation coefficient of the second track audio data when the first volume is larger than or equal to the second volume; amplifying the first track audio data according to the amplification coefficient, and attenuating the second track audio data according to the attenuation coefficient; synthesizing the amplified first track audio data and the attenuated second track audio data into second audio data; and outputting the second audio data through a single track. According to the invention, the problem that when audio data of two tracks in double-track audio data have autocorrelation, and can cancel out each other due to phase difference, and therefore the tone quality of the synthesized single track audio data becomes worse, the loudness is reduced is avoided.