correctness of power of ISO test files

[MDudaie]

First, thanks for this repository and work!
we are trying to test the ISO, and we found that when you read the WAV files that are included in the ISO, which says 40 or 60dB etc. you are multiplying the power by 2sqrt(2), which we can understand, but we're not sure why the ISO have files that are not in said power, maybe you can help us understand?

thanks a lot

[mglesser]

Hello, and sorry for this late answer. In Mosqito, we are using the load function to load the test signals. The wav_calib input parameter is used for wav file calibration factor. It corresponds to the level of the signal in Pa_peak corresponding to the full scale of the .wav file.

The ISO standard states in section B1 that "The test signals are sampled at 48 kHz and provided as 16-bit WAVE files. For the calibration of the WAVE files, 0 dB (relative to full scale) shall correspond to a sound pressure level of 100 dB.".100 dB corresponds to 2 Pa_rms which is 2sqrt(2) Pa_peak.