audio-recording

record live streaming audio

Hi guys I'm actually making an app which has to play and record streaming audio from internet on ipad. The streaming of the audio is done, I will have to come to the recording part very soon and I don't have any idea on how to proceed. Could you give me a hint??? Idea? It will have to play while simultaneously recording into AAC or MP3...

Recording Video in mac os x

hello need help for mac development , i need to develop an application in which i need to record a video , can any one tell me how to do this , i am new in mac development Thanks in advance Sid ...

Multiple audio recordings

I have a problem. I'm working on a project for my final year. I'm supposed to allow multiple recordings without having them overwrite each other. My supervisor advised me to put it as '.caf' but i'm not sure how to go about doing it. This is part of my codes: (IBAction)play:(id)sender { if (player->IsRunning()) [self stopPlayQueue]...

Mp3 encoder for android, record audio in mp3 format

I want to record audio in MP3 format in my android application. I know I can read PCM audio using the audioRecord class. Is there a java library compatible with android that will encode PCM to MP3? Is it possible to use the Lame mp3 encoder library? ...

Record voice call

Are there any programs or libraries that will allow me to record phone calls on Symbian OS? Especially using Java/C++/Python? ...

Can a iPhone voice Recorder App always run in Background recording the Sounds and Play them ?

Can a App record the Voice in the surroundings even when it runs in the background and play the recorded audio? Is it possible? ...

[Android] how to know whether a MediaRecorder is in running state or not?

I wrote a code to record audio of call conversation using MediaRecorder. how can i know whether a MediaRecorder is in running state or not, to stop the recording. like boolean running; MediaRecorder mr; //what should i assign to running? if(running){ mr.stop() } Above code is just an example.. If you do not understand my ...

Fast way of converting float of range -1 to 1 to short?

I need to repeatedly convert 1024+ consecutive 4 byte floats (range -1 to 1) to 2 byte shorts (range -32768 to 32767) and write to disk. Currently I do this with a loop: short v = 0; for (unsigned int sample = 0; sample < length; sample++) { v = (short)(inbuffer[sample * 2] * 32767.0f); fwrite(&v, 2, 1, file); } And this wor...

Can I programatically save the data stream sent to the sound card as a WAV file?

In Windows XP, you can configure your sound card properties via the preloaded windows software. In the recording properties, if "stereo mix" or "wave out" (or something similar) is selected as the recording device, programs that can record audio ("Sound Recorder" in windows for example) record a decent quality wave file of the audio str...

How to change a recorded voice to a man's voice in Core Audio (Audio Unit/ Remote IO) for iPhone

Hi All, I am new to Core Audio and really lost, I am trying to record an audio and then apply voice modulation to that recording and play it back. I have looked at the example Speak Here which uses Audio Queue for audio recording. I am stuck at the part of how to change the audio samples. I understand that it can be done using Audio Unit...

internal audio recording program

NOTE: This isn't something that would use a mic. I want to INTERNALLY record audio. I would like to write a program in C# or Java that records audio data sent to the speakers in my computer. The end product would allow the user to hit a "record" button, and anything being played at the moment would be recorded internally until the user ...

iPhone Audio Record with Export/Email

I have searched all over Apples website and the internet as well as Stackoverflow. Does anyone have any sample code or a tutorial of how I can record audio from the built in mic, and then export that audio via email? Please, I really need it for my app. Thanks. ...

C++ writing PCM data on Windows vs OSX

As a warning, I'm not super savvy with DSP so this may be silly. I've got a callback method in an application that takes a float buffer and writes it to a queue, and then eventually to a file. The callback method looks like this: FMOD_RESULT F_CALLBACK dspCallback (FMOD_DSP_STATE *dsp_state, float *inbuffer, float *outbuffer, ...

How do I record audio with C#/WPF?

I have an application to which I want to add the ability to import small audio snippets directly from a microphone device of some sort. I already allow importing of pictures and this works okay with disk files and cameras since cameras magically become disk devices when you attach them so a file import method works for both. Audio howe...

Macintosh - Detect if any data come out of Audio Card in a span of time

MODIFIED: Hi all, I need to detect if any data sent to Audio Card during a period of time. Thanks to Philip Regan's help, I found a simple sample code about audio recording as shown in following link: http://developer.apple.com/library/mac/#samplecode/AudioQueueTools/Listings/aqrecord_cpp.html#//apple_ref/doc/uid/DTS10004380-aqrecord_...

overwriting part of Audio during recording in iPhone

Is it possible to overwrite a part of the recording with another recording. When a recording is done, user gets back to a particular point of time in recording. And right from that time, he initiates a recording, and this should overwrite the earlier recording. Is this possible with AVFoundation Framework available in iPhone? ...

Where to find audio recordings for a 'learn to spell' program?

Where can I find or buy, in bulk, recordings of 20,000+ English words, read by native speakers? (preferably available as individual audio files with an index) I don't want to use a "text to speech" program if possible because the quality isn't good enough for people who are trying to learn a language. ...

Recording Mono on iPhone in IMA4 format

Hi, I'm using the SpeakHear sample app on Apple's developer site to create an audio recording app. I'm attempting to record directly to IMA4 format using the kAudioFormatAppleIMA4 system constant. This is listed as one of the usable formats, but every time I set up my audio format variable and pass and set it, I get a 'fmt?' error. Here ...

Bluetooth headset noise-cancellation activation through android app

I have read that in-call audio is not available to SDK applications. Does that mean that there is no way by which we can access the uplink/downlink audio stream? I don't want to do any call recording but instead I would like to use VOICE_CALL or VOICE_UPLINK or VOICE_DOWNLINK through my app which is interfaced with the bluetooth heads...

Sound manipulation reverse/playing recorded sound backwards on an iPhone

Hi everyone, I try to get my head around how to deal with some challenging requirements for my iPhone App. Requirements: 1. Record sound (voice of a person) 2. High quality 44100Mhz - 32 bit 3. Slow down playback (without pitching voice to high or to low!). however we would like to know how to do pitching/alter voice high and low as we...