bugGNU Octave - Bugs: bug #56494, Audioplayer sampling rate change...

 
 

bug #56494: Audioplayer sampling rate change does not affect the audio prodiced

Submitted by:  Deyan <dvd_video>
Submitted on:  Fri 14 Jun 2019 07:34:02 AM UTC  
 
Category:  Octave Function Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Incorrect Result
Status:  None Assigned to:  None
Originator Name:  Open/Closed:  Open
Release:  5.1.0 Operating System:  Microsoft Windows

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Fri 14 Jun 2019 01:32:50 PM UTC, comment #1: 

Thats only on a paused sound - resume resumes with paused settings

setting the sample rate and calling play on it, works with the new sample rate.

fs=20500;
duration=5;
freq=440;
values=0:1/fs:duration;
y=sin(2*pi* freq*values);

player = audioplayer(y, fs);
printf("play\n");
play(player);

pause(1);
pause(player);

player.SampleRate = 10000;

# no change here
resume(player)

pause(1);
stop(player);

# change applied
play(player);

What does matlab do ?

John Donoghue <lostbard>
Project Member
Fri 14 Jun 2019 07:34:02 AM UTC, original submission:  

Hello,

Consider the following code:

pause(Object);
Object.SampleRate = Object.SampleRate + UserInput;
resume(Object);

The expected result:
On decreasing the sampling rate, the high-end harmonics to be mirrored in the low-frequency range ( Women will sound like men ) and when increasing the sampling rate the object to process more data at a time ( Chipmunk karaoke effect )

The actual result:
The sampling rate change does not affect the output audio/sound of the player object.

Deyan <dvd_video>

 

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