audio-recording

How do I capture the audio that is being played?

Does anyone know how to programmatically capture the sound that is being played (that is, everything that is coming from the sound card, not the input devices such as a microphone). ...

What is the simplest way to continuously sample from the line-in using C#

I want to continuously sample from my PC's audio line in using C# (then process that data). What is the best way to do the sampling? ...

How can I record AMR audio format on the iphone?

A voice recorder doesn't need uncompressed Linear PCM audio. Compressed AMR would do fine. The iPhone framework built for recording audio is simple enough, but the only examples I've found for setting up the audio format (which come from Apple) use LinearPCM. I've tried various other combinations of values, but can't seem to get anyth...

How to sample multi-channel sound input in Java

I realised this might be relatively niche, but maybe that's why this is good to ask anyway. I'm looking at a hardware multiple input recording console (such as the Alesis IO 26) to take in an Adat lightpipe 8 channel input to do signal processing. As I have yet to acquire the device and need to work out whether this is feasible (budgetar...

How does one Capture MP3s in J2ME?

I was able to capture audio in the WAV format through Manager.createPlayer("capture://audio"). However, is there a way to capture audio in the MP3 format in J2ME? ...

Capturing Audio through Linux in J2ME WTK Emulator

Is it possible to capture audio in the J2ME WTK emulator on a Linux platform? Has anyone on this forum succeeded in doing so? ...

Deleting a File using J2ME throws an IOException

I am attempting to delete a file using J2ME's FileConnection.delete() method, but I an IOException is being thrown each time I call the delete() method. I have written a conditional statement to verify the existence of the file, but irregardless of that fact, an IOException is thrown. According to the FileConnection API, when delete() i...

Sound processing: Should I use DirectSound or directly Win32 APIs?

I'm making an application where I will: Record from the microphone and do some realtime processing on the input Play an MP3 file (a regular song), but manipulating the output in realtime Every now and then I'll need to play additional sounds over this song too, but I guess I can do that by simply adding the buffers. In short, I need ...

Java AudioSystem and TargetDataLine

I am trying to capture audio from the line-in from my PC, to do this I am using AudioSystem class. There is one of two choices with the static AudioSystem.write method: Write to a file Or Write to a stream. I can get it to write to a file just fine, but whenever I try to write to a stream I get thrown java.io.IOException (stream length n...

Recording Audio via the Web for an Intranet Solution

What is the best (cheapest, most open) way to record audio via a web page. Then keep that recording as MP3 format and make it available via a unique ID / URL. I guess Flash-based plug-in would be best. I'm thinking of something that works like Odeo, but this would be for Intranet-only usage. I can't rely and public URLs or Services. I'...

Learning Audio Manipulation

I want to learn how applications like CakeWalk, Cubase, and ProTools are built. Are there any good resources out there to learn this type of development? Resources Digital Signal Processing Basics ...

Sound recording iPhone app - bad quality

Hi, I am making an iPhone-application that records sound, but my problem is that the quality of the sound is very bad, it is a lot of noise. I use code quite similar to the Speak Here sample app. I get bad quality in different formats, AIFF, CAF, AIFC. Anyone experienced the same problems or have any suggestions? ...

Detect & Record Audio in Python

I need to capture audio clips as WAV files that I can then pass to another bit of python for processing. The problem is that I need to determine when there is audio present and then record it, stop when it goes silent and then pass that file to the processing module. I'm thinking it should be possible with the wave module to detect when...

How to control windows Sound recorder using java script.

I am making some thing that requires that I have to control windows sound recorder like starting recording and stopping recording and saving the recorded sound. how to control that. One thing more I don't want to see the recorder window. I will be grateful to who give the answer.. ...

Recording Audio From Web Page

I'm looking for a solution for capturing audio from a user's microphone and posting it (preferably as MP3) to a server. I need something that I can embed in a web page. I've seen where Flash can do this, but I understand that this approach requires expensive server-side software from Adobe. I'm not aware of whether Silverlight may pro...

finished iPhone app: add a new feature. record system sound and then be able to playback

i have just created a drum app. The user taps on the individual buttons which triggers a short sound to play using the systemsound from AudioToolbox. I now would like to add a UIButton which says "record", and upon click, will record all Systemsounds being played, and then when the use presses the stop button; the program should then be...

Record AVAudioPlayer output using AVAudioRecorder

In my app the user plays a sound by pressing a button. There are several buttons which can be played simultaneously. The sounds are played using AVAudioPlayer instances. I want to record the output of these instances using AVAudioRecorder. I have set it all up and a file is created and records but when I play it back it does not play any...

Delay when using AudioQueueStart()

I am using the Audio Queue services to record audio on the iPhone. I am having a latency issue though when starting recording. Here is the code (approx): OSStatus status = AudioQueueNewInput( &recordState.dataFormat, // 1 AudioInputCallback, // 2 &recordState, // 3 CFRunLoopGetCurrent(), // 4 kCFRunLoopCommonModes, // 5 0,...

how to record audio without flash and java from browser and upload to server

Hi, I want to upload the audio from user to server. How can i do it from browser itself. My main application is browser based. I am looking for browser and non browser based solution but It should be Open Source. That is why i put "without flash" in subject. With Java applet user will face problem in installing jre !! is there any hope t...

Is recording audio allowed in XAML Browser Applications

Hi all, I am searching ways to perform audio recording from the client's computer. I have stumbled upon XAML Browser Applications - XBAPs, and I want to make sure, is it possible to perform audio recording using it? ...