I build simple application to test hearing "parameters". ( www.enjoyaudio.org )
EnjoyAudio - DIY audio tools, hearing test.
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Enjoy Test and EnjoyAudio
EnjoyAudio - DIY audio tools, hearing test.
Recommended browsers: Chrome, FireFox, Edge.
Enjoy Test and EnjoyAudio
Last edited:
Hi,
Ok that seems impossible.
100% hits before first time i got "no" was at -130. That is supposed to be below audibility perhaps and noise floor of equipment - ??
Now going down below like 80 dbs the noise could not be clearly identified it seems. However it appeared to sound not as clear with noise.
Just curious, how the noise is added to the music ?
One more question : what is the bandwidth of the noise added ?
Regards,
Lukas.
Ok that seems impossible.
100% hits before first time i got "no" was at -130. That is supposed to be below audibility perhaps and noise floor of equipment - ??
Now going down below like 80 dbs the noise could not be clearly identified it seems. However it appeared to sound not as clear with noise.
Just curious, how the noise is added to the music ?
One more question : what is the bandwidth of the noise added ?
Regards,
Lukas.
MUSIC + NOISE = FINAL SIGNAL. Noise is random generated.
Noise Level : MAX_AMPLITUDE * 1/(10^( XdB / 20 ))
It is a white noise and BW is limited to Fs/2. I made a difference between "clean" and "noisy" track for the "-40dB" test. Noise level is constant, signal amplitude in the music sample varies so in more silent parts of the music the white noise is very audible. Pink noise would not be that much audible.
Therefore I used white noise with level calculated relative to maximal possible amplitude. I think it is the most objective test.
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