I have an wav audio file that I'm attempting to lower the volume by approximately 50% for. After processing, from what I can tell, sox -stat indicates that the volume has indeed been reduced by 50% but I can hear no perceptible difference between the two files when playing them back. Here are the outputs for sox -stat:
Original File:
Samples read: 4739088
Length (seconds): 148.096500
Scaled by: 2147483647.0
Maximum amplitude: 0.618225
Minimum amplitude: -0.610748
Midline amplitude: 0.003738
Mean norm: 0.033596
Mean amplitude: -0.000010
RMS amplitude: 0.053362
Maximum delta: 0.576111
Minimum delta: 0.000000
Mean delta: 0.036394
RMS delta: 0.055847
Rough frequency: 2665
Volume adjustment: 1.618
File with volume reduced by 50%:
Samples read: 4739088
Length (seconds): 148.096500
Scaled by: 2147483647.0
Maximum amplitude: 0.315308
Minimum amplitude: -0.311462
Midline amplitude: 0.001923
Mean norm: 0.017134
Mean amplitude: -0.000005
RMS amplitude: 0.027214
Maximum delta: 0.293823
Minimum delta: 0.000000
Mean delta: 0.018561
RMS delta: 0.028482
Rough frequency: 2665
Volume adjustment: 3.172
I'm not very experienced with audio processing so any insight into this be would be appreciated, thank you.
question from:
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