Please explain why we use 32768 in Audio Signals

Question

I'm new to audio signals. What is the value 32768 that we use here?

Sample code:

rate, data = wavfile.read(wav_loc)
data = data / 32768

score 5 · Accepted Answer · answered Jan 09 '20 at 06:19

5

Assuming that the wav-file is 16 bit integer, the range is [-32768, 32767], thus dividing by 32768 (2^15) will give the proper twos-complement range of [-1, 1]

answered Jan 09 '20 at 06:19

Vaibhav Jadhav

2,020
1
7
20

`(32767 / 32768) < 1.0` though? So range is [-1.0, 1.0)? – Steazy Jul 19 '23 at 04:04

score 1 · Answer 2 · answered Jan 30 '21 at 10:13

1

Another answer is that -32767 to +32767 is proper audio (to be symmetrical) and 32768 means that the audio clipped at that point

answered Jan 30 '21 at 10:13

martinwguy

948
6
14

Please explain why we use 32768 in Audio Signals

2 Answers2