Mikko Olkkonen <molkko@xxxxxxxxx> writes: > On Fri, Jul 29, 2022 at 8:50 PM Iarla Ó'Riada <iarlaoriada@xxxxxxxxx> wrote: > >> I’m using this command to create 8svx files: >> >> sox -q --multi-threaded --buffer 131072 -S -V -D "epoch.wav" "epoch.8svx" >> remix - rate -v -s -I -b 99 -a 16754 gain -n -0.14 dither -S stats -b 8 >> >> It’s good for ancient computers , but I’d like to reduce file size further >> if possible. What’s the best way to do this? > > At least in my setup the file size seems to be very much proportional to -a > value. e.g. 16754->8300 results in roughly halved file size. -a 1 results > in file size of only 29 bytes! I dont know if this qualifies as "the best > way to do it". There seems to be some misunderstanding here. The -a flag to the rate effect does not take an argument. The number you are playing with is the target sample rate. Requesting a sample rate of 1 Hz amounts to throwing out pretty much all the audio data, so it's no surprise the resulting file is small. As for the original question, 8svx files store uncompressed 8-bit samples. The file size thus depends entirely on the sample rate and the number of channels (which you've already reduced to one/mono). Depending on the application, a low sample rate may be acceptable. For reference, traditional landline telephony uses 8 kHz sample rate. -- Måns Rullgård _______________________________________________ Sox-users mailing list Sox-users@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/sox-users
