The invention discloses a
broadcast quality monitor comprising a display screen. The
broadcast quality monitor is characterized by comprising an
equalizer, a demultiplexing module, an AES 3-to-I S module, a D / A converter module, a data sampling module, a
data processing module, a dynamic
audio frequency sliding column module and a
display driver module, wherein the
equalizer is used for equalizing and compensating the
line loss of the SDI signals embedded in the
digital audio signals; the demultiplexing module is used for demultiplexing and separating out a video
signal and a first
audio signal; the AES 3-to-I S module is used for converting the first
audio signal into an I S
audio signal; the D / A converter module is used for converting the I S audio
signal into a simulated audio
signal; the data sampling module is used for sampling the
voltage of the simulated audio signal; the
data processing module is used for converting a
voltage value obtained by sampling into a dB value; according to the dB value, the dynamic
audio frequency sliding column module is used for generating and transferring a dynamic
audio frequency sliding column with corresponding length to the
display driver module according to the dB value; the
display driver module is used for overlapping the dynamic audio frequency sliding column on the video signal; therefore the dynamic audio frequency sliding column can be displayed on the display screen in real-time. The invention completely solves the problem of audio monitoring of SDI interfaces by one step.