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Questions tagged [mixing]

245 questions
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3 answers

Mixing sound files on an iPhone

I've got a couple of wav files and possibly a mp3 that I'd like to mix down to a single wav or mp3-file. I'm using C/C++/Obj-C (iPhone). I have really no experience with this sort of thing. If anyone could give me some pointers, I would be very…
quano
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Adding and removing audio sources to/from GStreamer pipeline on-the-go

I wrote a little Python script which uses an Adder plugin to mix two source streams together. After starting the program, you hear a 1kHz tone generated by the audiotestsrc plugin. When you press Enter, an another 500Hz test tone is connected to the…
NagyI
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3GP/AMR mix/merge tracks

Is there an easy way to merge 2 3gp (amr) audio files into a single audio file? I need them to be synchronous/over top of each other not one after the other. I am using android to do this. I have heard somewhere that for some audio formats you can…
Kevin
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Scala : get mixin interfaces at runtime

I need to get all the interfaces at runtime from a given Class (all loaded in a ClassLoader). For instance, if a class has been declared this way : trait B trait C trait D class A extends B with C with D I want to get this information at…
Mathieu
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2 answers

Mixing multiple signals using audio units on the iOS

I'm making a controller for a synth on the iPad, and I have 4 or 5 signals that I want to mix and send to the remoteIO render callback . Right now I have two choices: I can use the multichannel mixer unit but I don't know how it works internally.…
anon
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creating an audioWorkletNode with 4 channels?

I am working on a mod player which is an audio file with 4 different tracks (channels) using webaudio/audioWorkletNode. I got it working correctly using a 2 channel (stereo) audio node: channels (tracks) 0 & 3 are mixed into the left…
warpdesign
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How mixing LTR and RTL languages is managed in unicode?

Sometimes we have to show messages in display which is a mixing of RTL and LTR languages. The message is in unicode. So, how unicode handle the mixing? Is there any dependency on the platform?
Gulshan
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How to mix PCM audio sources (Java)?

Here's what I'm working with right now: for (int i = 0, numSamples = soundBytes.length / 2; i < numSamples; i += 2) { // Get the samples. int sample1 = ((soundBytes[i] & 0xFF) << 8) | (soundBytes[i + 1] & 0xFF); // Automatically converts…
yesbutmaybeno
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1 answer

Mingling C++ classes with Objective C classes

I am using the iphone SDK and coding primarily in C++ while using parts of the SDK in obj-c. Is it possible to designate a C++ class in situations where an obj-c class is needed? For instance: 1) when setting delegates to obj-c objects. I cannot…
Joey
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Mixing Audio Files

I have few audio files: f_1 - length 10 sec f_2 - length 3 sec f_3 - length 1 sec What I need is to find a way to mix(merge) f2 and f3 at particular section in f_1 (i.e. position which is equal to 6 sec) I was looking at Audio examples but they…
sinek
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Best way to access Java classes from C++? (better than using JNI directly)

I have to integrate a large Java library in a quite large C++ application. A solution is to use JNI but this requires to hand code all the classes. Python has, for example, a wonderful solution with JPype (http://jpype.sourceforge.net/) that…
dasloop
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Common Action Listener for 3 Buttons

I am having trouble with the design of my code. I have 3 buttons not in a button group. I want to - based on the selected button - perform an action. Now the action requires a modification of an object in the class. This means i cannot use an inner…
Biscuit128
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How to use ffmpeg to mix two audio files to a single one?

I want to mix two audio files to a single one use ffmpeg. So I download the latest version of ffmpeg, and check the document and get the code: ffmpeg -i 10001.wav -i 201.wav -filter_complex amix=inputs=2:duration=shortest output.wav but I got this…
Dead Live
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gdb -- No source file named - intel compiler

I am calling fortran 90 code from a c code. There is a main() (in c) that calls a wrapper function in the same file, that calls a fortran subroutine (actually in a liblibrary.a). I am working on linux. Now, I'm using gdb to debug the executable, but…
simona
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How to mix Mp3 files

I would like to mix MP3 files with Delphi 2010. Is this possible? Does anyone know of a component(set) I could use to get this done? Or maybe a runtime library? Any tips from someone with experience mixing MP3 files?
Kermia
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