I have not looked into the Java Sound API too much before I had this idea,
so I went and looked at the Tutorial by Oracle concerning this topic.
I did not find what I was looking for, though...
Basically, I need to take the audio feed from the microphone input
and mix in another audio file. This would be for Skype, to play background music.
Now the important thing about this is that the modified audio feed
would have to be used BY Skype instead of the original microphone-only audio.
Is there any (easy?) way to achieve this?
Regards,
Tom S.
Related
My overarching goal: I'm looking for a way to grab current system sound and run it through a visualizer in Processing 3. Currently I have found a way to do this grabbing the mic input:
function setup() {
sound = new p5.AudioIn();
sound.start();
fft = new p5.FFT();
fft.setInput(sound);
}
But I have yet to find a way to do this with system sound (ie. A youtube video, Spotify, an MP3 file playing)
As well i'm not even sure if this is possible with some programs like spottily as they have built in security.
All in all I think the solution to this problem is probably similar to how you would go about capturing system audio in a screen recording program.
Note: The captured audio is being pipped into the Minim Library for visual processing.
Capturing system output in Processing is a bit tricky. In fact, even being able to record system output is a demon of its own.
I managed to accomplish this task on my MacBook Pro in Processing by using Soundflower (Mac) as a workaround. This application acts as a MIDI device to route your sound output to your sound input. Once installed, open Audio MIDI Setup and select Soundflower as your sound input.
When you run your Processing script, p5.AudioIn() will take the Soundflower audio input channel and use it get the frequency bands of all sounds coming out of your computer alone.
Best of luck!
How can i intercept blackberry calls audio and amplify the audio before the audio is sent out?
My blackberry z30 running on the latest bb10 OS has had an issue of low voice calls. Everyone complains that they cant hear me when on call. However, when am recording audio say on whatsapp calls or video recording, the audio is crystal clear, meaning somehow blackberry suppresses my call audio only.
I dont want to throw away the phone without putting up a good fight, programmatically. I would like to try to "intercept" the audio on calls, amplify the sound then send out the voice, much louder. Any possibility of achieving this? I am good in Java and c++ programming. Solutions using these languages will be highly appreciated.
Found a solution. Got source code of one of those fancy voice changer apps. Instead of changing voice, i amplify the sound. I am yet to hear anyone complain, second day now.
I need to implement a voice activity detection algorithm in Java so that I can know when to start and/or stop recording audio. I am looking for an algorithm that can take either a byte[], a target-data-line, or an audio file as input. Also, a solution would preferably not use external dependencies.
Give a look at TarsosDSP as source of inspiration: It is so far the best open source Java library to deal with Audio Detection. It is purely written in Java and briefly provides:
SoundDetection
PitchDetection
PercussionDetection
Audio Time Stretching
Pitch Shifting
IIR- filters
Check also the official paper and manual for a better grasp on the topic.
I'm writing a video recording program, and it's going quite well. I can record mic as well as video from the screen. However, I would also like to be able to obtain sounds from another Java program and then sync them with the video. Basically, record the audio as it is played by the other program.
Is there a way to accomplish this? I'm pretty new with sound, and have read a bit up on it. I think I need to set up a mixer, but I'm not sure if I can actually obtain sound from another Java program that way.
This is not possible with java sound, not because of any particular problem with java sound, but because not all audio APIs that java builds on support this feature. (Core audio on the mac for example, and ASIO on windows. Not sure about ALSA on linux, but I don't think it supports this either).
If you are on windows and want to write JNI/JNA code you can use PortAudio which supports this on one of the audio APIs (sorry I can't recall which one).
I'm trying to record/process some audio from three usb microphones with Java Sound on Snow Leopard (but can switch to Windows if it fixes things). Problem is, when I try to use the mixer that corresponds to the usb mic, Java Sound tells me that the line isn't supported. Specifically, it says this...
Available mixers:
Java Sound Audio Engine
USBMIC Serial# 041270067
Built-in Input Built-in Microphone
Soundflower (2ch)
Soundflower (16ch)
Exception in thread "AWT-EventQueue-0"
java.lang.IllegalArgumentException:
Line unsupported: interface
TargetDataLine supporting format
PCM_SIGNED 96000.0 Hz, 8 bit, stereo,
2 bytes/frame,
...when I ask it to select the USBMIC mixer:
Mixer mixer = AudioSystem.
getMixer(mixerInfo[1]);
I have tried matching the audio format to the exact specifications of the microphones (16-bit, 44100Hz, stereo) and it didn't make any difference.
The problem is cropping up here:
final TargetDataLine line = (TargetDataLine)
mixer.getLine(info);
It would seem that the mixer and the TargetDataLine don't like each other. Is there some way to get these two to 'match' and get along?
The microphones that I'm using are admittedly a bit strange. They were made to be used in a karaoke video game called SingStar. The mics themselves have standard mono line-in connectors that plug into a little hub (two to a hub) that converts them into a single male usb connector. Strangeness aside, though, they seem to work perfectly fine with Audacity as separate channels, so multichannel recording with them is clearly possible, just maybe not in Java.
I've also considered using a program like Soundflower that shares audio between different programs. However, I'm not sure this will work as I can't see how to make the USB mics inputs to Soundflower and then pipe them into a Java. A quick experiment showed me that I could record audio in Audacity from the mics, pipe it out through Soundflower, and then process in my Java program. Still, what I would like to do is have it all happen in real time in Java.
Anybody familiar with this kind of problem?
I think that a simple way to do this would be using Soundflower and Soundflowerbed.
I can't see how to make the USB mics inputs to Soundflower and then pipe them into a Java.
It sounds like you have Soundflower installed already. Soundflowerbed is found in the same disk image as Soundflower and is a menubar application. It lets you route sound between applications which don't have controls built in for selecting sound devices. Install that from the disk image and click it to run.
All of the following will be using my Echo Audiofire 4 but in principle should work on any audio device.
Using Soundflowerbed
Open Soundflower and tick the audio device you want to use under Soundflower (16ch). As I'm a new user I can't post images but they are linked below. If I get the bounty then I will edit the post to include the images inline.
From here you would use Soundflower (16ch) as your audio input device in Java sound.
Creating an aggregate audio device
An alternative way to solve this if that didn't work is to create an aggregate device. Open Applications > Utilities > Audio Midi Setup and click the plus sign to create a new aggregate device.
Tick the device that you want to aggregate. You only want your USBMIC (As I'm a new SO user I can only post two images per answer so the next two are linked here).
The key part which may be giving you trouble is the clock on the device. If you select the Mac as the clock source then that may be more stable.
If this still doesn't work then you could try adding the Mac built-in audio to the aggregate device and making it the master clock by right clicking on the device you want to be the master.
Other options
Finally, I haven't used this before but Pulse Audio (Google it, I can't insert more links in this post) might be a possible solution for mixing your audio streams together. It looks quite heavyweight though.
According to my research, especially threads like this, the microphone you are using is most likely causing the problem. The thread states that the microphone is even a problem when it comes to switching games, so I am guessing that it will be a problem when switching platforms, too.
My suggestion is - if you have not tried this already - to use a different microphone! Most microphones I have messed around with have special chip controllers that convert data into the data compatible for the game system. Being that you are using this on an operating system for the computer, you are probably getting some very odd effects that you wouldn't get on a game system like Playstation or others.
Hopefully this helps! Happy coding!
The AudioFormat doesn't match the TargetDataLine's supported format. I don't know if that was a typo or not but the Exception thrown says the TargetDataLine supports 8 bit audio and right below that you said you're using a 16 bit AudioFormat. It also supports up to 2 bytes per frame, how quickly and in what size chunks are you trying to read the data? Sorry if that doesn't help but I thought I'd point that out in case it was overlooked.