<![CDATA[How to store Audio Input in array?]]>https://forum.qt.io/topic/139275/how-to-store-audio-input-in-arrayRSS for NodeThu, 05 Nov 2026 09:00:11 GMTTue, 13 Sep 2022 11:09:00 GMT60<![CDATA[Reply to How to store Audio Input in array? on Tue, 13 Sep 2022 11:13:27 GMT]]>@kayakaan02 https://doc.qt.io/qt-5/qaudiooutput.html#start-1 returns QIODevice* which you can use to read the data (see https://doc.qt.io/qt-5/qiodevice.html#readyRead and https://doc.qt.io/qt-5/qiodevice.html#readAll

]]>https://forum.qt.io/post/728539https://forum.qt.io/post/728539Tue, 13 Sep 2022 11:13:27 GMT<![CDATA[Reply to How to store Audio Input in array? on Wed, 14 Sep 2022 11:49:31 GMT]]>@kayakaan02 said in How to store Audio Input in array?:

The QByteArray that readAll() returns is empty

That is not possible provided you call readAll() in the slot for readyRead(), just as I see you have marked as the correct answer from @jsulm above..... If you call readAll() anywhere else it could be empty. Your code cannot be the same as the example you quote since that does not use readAll().

]]>https://forum.qt.io/post/728693https://forum.qt.io/post/728693Wed, 14 Sep 2022 11:49:31 GMT<![CDATA[Reply to How to store Audio Input in array? on Wed, 14 Sep 2022 11:42:07 GMT]]>@JonB So I have another problem, The QByteArray that readAll() returns is empty, and also I compared two .raw files that QAudioInput generated, one of them is recorded while my mic is muted and the other is normal, they have no difference. As I said, It's the same code as shown as example at QT Doc(here)

]]>https://forum.qt.io/post/728691https://forum.qt.io/post/728691Wed, 14 Sep 2022 11:42:07 GMT<![CDATA[Reply to How to store Audio Input in array? on Tue, 13 Sep 2022 13:35:22 GMT]]>@JonB @jsulm thanks, I solved the problem.

]]>https://forum.qt.io/post/728572https://forum.qt.io/post/728572Tue, 13 Sep 2022 13:35:22 GMT<![CDATA[Reply to How to store Audio Input in array? on Tue, 13 Sep 2022 13:29:18 GMT]]>@kayakaan02 said in How to store Audio Input in array?:

seems like It doesn't return anything.

What do you mean? When you call QByteArray QIODevice::readAll() it returns a QByteArray of the bytes read. If you have your own char buffer you would prefer it read into there is also qint64 QIODevice::read(char *data, qint64 maxSize).

]]>https://forum.qt.io/post/728568https://forum.qt.io/post/728568Tue, 13 Sep 2022 13:29:18 GMT<![CDATA[Reply to How to store Audio Input in array? on Tue, 13 Sep 2022 13:08:07 GMT]]>@jsulm I've got an another question, this can read the data but how can I access it? where does it store what it just read? seems like It doesn't return anything.

]]>https://forum.qt.io/post/728563https://forum.qt.io/post/728563Tue, 13 Sep 2022 13:08:07 GMT<![CDATA[Reply to How to store Audio Input in array? on Tue, 13 Sep 2022 11:23:56 GMT]]>@kayakaan02 Yes, you can also write the data you get from the QIODevice into a file.

]]>https://forum.qt.io/post/728545https://forum.qt.io/post/728545Tue, 13 Sep 2022 11:23:56 GMT<![CDATA[Reply to How to store Audio Input in array? on Tue, 13 Sep 2022 11:19:13 GMT]]>@jsulm Thank you! I didnt see this. So as I read the data real-time it can also append data to the file?

]]>https://forum.qt.io/post/728543https://forum.qt.io/post/728543Tue, 13 Sep 2022 11:19:13 GMT<![CDATA[Reply to How to store Audio Input in array? on Tue, 13 Sep 2022 11:13:27 GMT]]>@kayakaan02 https://doc.qt.io/qt-5/qaudiooutput.html#start-1 returns QIODevice* which you can use to read the data (see https://doc.qt.io/qt-5/qiodevice.html#readyRead and https://doc.qt.io/qt-5/qiodevice.html#readAll

]]>https://forum.qt.io/post/728539https://forum.qt.io/post/728539Tue, 13 Sep 2022 11:13:27 GMT