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wav - Volume reduction in audio file

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:https://stackoverflow.com/questions/65896585/volume-reduction-in-audio-file

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