Hall objective sound quality parameter measurement method and system based on pulse response noise reduction
An impulse response and measurement method technology, applied in speech analysis, instruments, etc., can solve problems such as errors in the measurement results of objective sound quality parameters in halls, and achieve the effect of avoiding excessive load and additional pulses, avoiding additional pulse interference, and reducing measurement errors.
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Embodiment 1
[0069] The invention provides a method for measuring objective sound quality parameters in halls based on impulse response noise reduction. figure 1 The flow chart of the method for measuring objective sound quality parameters in halls provided by the present invention, such as figure 1 As shown, the method includes:
[0070] Step S1: Weighting the frequency sweep signal of equal amplitude to generate a weighted frequency sweep signal.
[0071] Step S2: Generate a frequency sweep sound signal based on the weighted frequency sweep signal, and send the frequency sweep sound signal to the interior of the room under test.
[0072] Step S3: Acquire the acoustic signal at the sound measuring point in the room under test and convert it into a corresponding sound pressure signal.
[0073] Step S4: Generate a corresponding energy impulse response signal based on the sound pressure signal, and perform truncation and noise reduction processing on the energy impulse response signal.
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Embodiment 2
[0117] The invention also provides a hall objective sound quality parameter measurement system based on impulse response noise reduction, figure 2 The structure diagram of the hall objective sound quality parameter measurement system provided by the present invention, such as figure 2 As shown, the system includes:
[0118] The signal generation module 1 is used for weighting the frequency sweep signal of equal amplitude to generate the weighted frequency sweep signal.
[0119] The signal transmitting module 2 is connected to the signal generating module 1, and is placed inside the room under test, for generating a frequency sweep sound signal based on the weighted frequency sweep signal, and sending the frequency sweep sound signal to the room under test internal.
[0120] The signal acquisition module 3 is arranged at the sound measuring point inside the room under test, and is used for collecting the sound signal at the sound measuring point in the room under test and c...
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