audio

iPhone SDK Audio Mixer

What I need to do is be able to mix 4 channels of audio (not from a live source, just prerecorded audio files in the app bundle), and change their volumes individually, in real time, preferably with MP3s. What's the best/correct road for me to take, regarding all the various sound APIs for the iPhone? Thanks! ...

.net mp3 converter library

Hi There, Does anyone know of any library to convert .caf files or .aif audio files to mp3 format. Im recording these on iPhone using AVAudioRecorder pibrary but need to convert them to mp3 on server side. Your help is much appreciated. Really stuck on this one. ...

Java spectrogram images: mp3 and microphone

First of all i'm working on a little project to see the spectrum from some sounds. I got this working with a microphone: The image above is just me talking and shouting through a microphone for a few seconds. This looks good to me. But when I try to read an MP3 file and make a spectogram image of it it looks a bit different. I tried ...

Music Visualization

Hi, I am intrested in learning about Music Visualization. (eg: http://en.wikipedia.org/wiki/Music_visualization ) Does anyone have any books to recommend on the subject? (I know its not a technical question, but it seems like a good place to ask) Many thanks ...

Can anyone point me a direction i can follow to learn how to handle audio in xcode

My real objective is to be able to use 1 audio file and create X amount of different pitches and then playing them in the app using some code to handle the timing. TIA for any helpful insight ...

How to read from a microphone on windows mobile

Hi, I need to read a audio from the mic on PDA (running WM6) . How do it on c# ? Thanks ...

How to time-shift audio on iPhone

This is similar to The Pitch Shift question, except I want to keep my audio at the same pitch, but play it slower or faster -- time shift it. (On the iPhone.) Can anyone point me to a library, tutorial or other reading to help with that? Thanks! ...

How do I detect if other apps are playing background audio?

I am making a game for iphone/ipad, and don't want my background music to interfere with music the user might already be playing. I know I can get the state of the iPod app using MPPlayerController, but how would my app figure out if something else, like Pandora, was playing background audio on iOS4? ...

Audio formats supported by DICOM

Hello , which is the audio formats supported by DICOM as per DICOM standards? Thank You, ...

Most simple and fast method for audio activity detection?

Given is an array of 320 elements (int16), which represent an audio signal (16-bit LPCM) of 20 ms duration. I am looking for a most simple and very fast method which should decide whether this array contains active audio (like speech or music), but not noise or silence. I don't need a very high quality of the decision, but it must be v...

The best scripting language for web audio / sound

Good day, I'm looking to start learning a scripting language for web audio and sound development. It needs to be able to handle simultaneous audio events, eg; to trigger a sound when another is playing (I'm not sure if and how this is possible, but have witnessed this kind of presentation: http://www.projectiva.co.uk/ (can this kind of...

How can I record audio in a web app client side and save it in a web server?

I have a requirement to do a flash program or something like that (not necessarily flash, it can be javascript or something in aspnet) that allow me to save audio in the client side of a web app, and save it on a file in the server side of the web app. I've been searching a lot in google, and all I've found are just old questions, but n...

Android - Storing Audio Files into the SQLite Database

Hi Folks, I am developing an application for android phone, In this I need to use at least 400 audio file which can be played for some respective texts, Now my question is which is the optimized way to do this.. One solution is putting all the audio files in the resource folder and referring from there, this will n...

how to run audio after the application hes entered in backgroundMode in iPhone 4.0

hello all, I have tried several forums but still unable to get the answer.. I am developing an application which does radio streaming in iPhone 4.0 Now i want that the audio of the radio must continue even after the application is in suspended state.. Also i have an .m3u file which contains 3 urls of .mp3 So i also want that if one mp3...

Best approach for user to user audio communication

For one of my projects I need users to be able to communicate with each other in an audio mode. The thing I'm concerned about is the scalability of the project if it even gets big in terms of bandwidth consumption. What are the alternatives to passing the audio through my server to the users? Is it possible to create a link between tw...

Cross-platform Audio Playback in Python

Is there a cross-platform Python library for audio playback available? The operating systems I am targeting are (in order of importance) Windows, Linux, and Mac OSX. The file formats which need to be supported are (in order of importance) MP3, OGG, WAV, and FLAC. Does something like this exist? I have tried a few of the Python libraries...

What audio format works for Silverlight + WPF ?

Hi, I'm writing a pair of applications for distributing audio (among other features). I have a WPF program that allows an artist to record and edit audio. Clicking a button then uploads this to a silverlight-powered website. A consumer visiting this website can then listen to the audio. Simple. It works. But I'd like it to be better: I ...

Decoding Audio / Audio Playback (AS3)

I'm interested in learning how to decode and playback audio in ActionScript 3. I understand how to write bytes to a Sound object using the SAMPLE_DATA event, so that's not really a problem. What I want to understand is how I could implement alternate audio formats for native playback inside of Flash Player. I guess what I'm asking is: ...

objective c audio meter

Is it possible for xcode to have an audio level indicator? I want to do something like this: if (audioLevel = 100) { } or something similar... Any ideas?? Example code please? I'm VERY new to objective c so the more explaining the beter! :D ...

How can I create a temporary memory location for a downloaded file using windows mobile 6 smartphone?

I am currently working on a program which translates english texts to french with an audio playback of the translated text. I am getting the translated texts as well as the audio over the net. My problem is that, when I want to play the audio file over and over again, I have to connect to the internet and load the the audio file everytim...