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• Wav analysis in python

  - by mudder

  I'm looking for a python library that will help me analyze the audio in wav files. At the very least I'm hoping to find some kind of interface that understands .wav format so that I don't have to :P at best I need a module with methods for reading wave form parameters like pitch, volume levels, etc

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• persistent view controller

  - by derrichh

  Im building an iphone radio application and I want to have the controls, play, pause, stop, etc. in a tool bar (a custom view controller) at the bottom of the application. I want to keep this there throughout all the views so you can control the audio while navigating through the other parts of the application (multiple view/table controllers). Is there a way to create a view that stays in place like a tab bar?

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• How do I load all my location based content into google maps

  - by user333639

  I am writing an iPad application that uses the MapKit control. How do I get all my content into Google Maps. i.e. I have a bunch of locations along with photos, video, audio and various other information. So when the iPad user loads my App and zooms into a certain place in the world I want my Annotations to be visible and when they touch the pins they get access to more information etc.

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• Asterisk TDM Out Channel Not Recording

  - by Benny

  I am trying to use the monitor command to record a TDM extension, but only the in chnnnel is being recorded. The out channel is 44 bytes and obviously no audio within. However, when monitoring a SIP or IAX phone, no problems exist. Is there some configuration I'm missing for distinguishing between TDM and SIP/IAX for recording? Thanks in advance!

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• Java Instant Messenger

  - by agazerboy

  Hi All, Thanks for taking time to read my question :) Can you please tell me if there is any open source instant messenger in java? I found some but they are all in C/C++ :( It is not a school assignment :) Coz I need open source java messenger that should have audio video archive etc. options...

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• Parse (extract) DTMF in Python

  - by Joseph

  If I have a recorded audio file (MP3), is there any way to get the figure out the DTMF tones that were recorded in pure Python? (If pure python is not available, then Java is okay too. The point being that it should be able to run in Google Appengine)

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• Possible to "next track" e.g. Spotify from my app?

  - by parse

  I'm planning on doing a application for Android 2.1 that changes song every minute (through what I hope exists in Android, "next track") for the application using the audio device atm. So if I have Spotify (http://www.spotify.com) running in background already, playing music, can I through my program change to the next track? Let me know if I was unclear about anything. Thanks in advance!

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• What's the best way to integrate video chat into a website?

  - by phil

  I want to make video/audio chat(both one-to-one and chatroom) available on my website through web browser, and no download required. What's the available solutions out there? And what are their pros and cons?

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• Triple Boot?? Windows 7, Windows 7 and Ubuntu??

  - by BillJeansk

  Hello, currently I have dual boot with 2 windows 7. (dont ask why, long story, I need them for each with different settings involving Audio Recording) I am very keen to install the new Ubuntu and get into a new OS, out of interest but I don't want to mess with my current 2 windows installations? If I install Ubuntu, will this simply add to my list of OS boot options when you set it, like I did when I install my 2nd Windows 7 Any comments or help would be great? Thanks Bill

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• What is this line doing exactly?

  - by mystify

  From the Finch audio library: - (void) play { [[sounds objectAtIndex:current] play]; current = (current + 1) % [sounds count]; // this line here... } I try to grok it: There is a number of sounds n, and current is increased by 1 on every iteration. As soon as current is bigger than number of sounds n, the modulo returns zero. That way, it starts from the beginning. Is this correct?

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• Bash: easy way to put a configurable load on a system?

  - by WizardOfOdds

  In order to test how a program reacts when system resources become scarce (mainly the CPU but I'm interested in disk I/O too), I'd like to put an arbitrary load on the system. Currently I'm doing something like this: #!/bin/bash while true do echo "a" >> a.txt md5 a.txt done I could also start mp3-encoding audio files, or whatever. What would be an easy and small Bash script that could be used to simulate an arbitrary load, ideally configurable using parameter(s)?

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• Html 5 video tag and codecs problem

  - by AntiGameZ

  I have a mkv file. It's video codec is avc and audio codec is ac3. How can i put it into a html5 video tag? I use the <source src="01.mkv" type="video/x-matroska" codecs="a_ac3, avc"> but in safari 5 or chorome4 it doesn't works.

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• retrieving detailed usb midi device information on windows xp

  - by user557353

  The function midiOutGetDevCaps returns a structure MIDIOUTCAPS. I'd need more specific information when querying a usb midi device on windows xp, in particular I'd need the information displayed under "Location" when opening the respective device using the Device Manager. I need this information in order to programmatically distinguish between several MIDI Interfaces connected to a computer. Using midiOutGetDevCaps, I uniformly get "USB Audio Device" for every midi usb interface connected to the computer, so distinguishing between the interfaces is impossible.

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• Construct MediaStore uri for specific folder

  - by Mojo Risin

  Hi all, For example if a have two directories /sdcard/Music/Music-1 and /sdcard/Music/Music-2 how can i construct uri to get the files in Music-1 dir for example. I can use MediaStore.Audio.Media.EXTERNAL_CONTENT_URI to get the content of all external storage but how to do the trick only for specific dir.

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• Silverlight play file from samba enabled remote server

  - by Damian

  Hello, Im currently working on Silverlight app, which resides on our ASP.NET webpage. I want to populate listbox with names of (audio wav) files that are on remote linux machine. I also want to be able to play those files using MediaElement. Im wondering if it is possible to get stream of remote samba enabled linux server. thx, for answers

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• Mime type for videos with automated python email

  - by EricR

  What sort of mime type should I be using to email a .avi file from an automated python script? There are specific ones for audio/images, but not video afaik.

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• How to use keyboard shortcuts to select a portion of waveform instead of mouse drag and drop?

  - by nc

  I am making a project where i am drawing waveform of an audio file in C#. Currently I am using mouse drag and drop for a part of waveform selection. But now i want that the waveform should also be selected by using following: click at a point press shift and click again on another point. I dont have much knowledge about keyboard events. So need help in this.

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• Is the source code of the demo at WWDC 09, Session 304 available?

  - by mystify

  At WWDC 09 in Session 304 "Game Development for iPhone, Part 1 (Graphics, Audio)", about 6 minutes after start of the Session, they showed off a small but nice OpenGL ES game demo and repeating over and over again how easy it is to implement. Is that source code of the demo available somewhere for download?

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• Basic framework for presentations using HTML5 + javascript

  - by Brian C

  Do you know a framework for making presentations using only HTML5 and javascript technologies? I'm not talking about "export" features of various presentation software (powerpoint or OOo presentation). Some requirements for the presentations made with this "framework": take advantage of the latest HTML5 features (audio, video, canvas?) same with CSS3 (font support, gradient, shadows, transitions and transformations) If there's no such thing, example of good presentations or pointers on the subject would be appreciated.

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• Why is native libmpg123 taking so long on android with libgdx?

  - by cmbryan

  I'm trying to use the gdx-audio extensions, but am having trouble decoding mp3s. It works, but very slowly!! A 10-second file is taking 6.57 seconds to decode :( Here is the method: public void decode() { Mpg123Decoder decoder = new Mpg123Decoder(externalFile); short[] sampleArray = new short[1024]; // read until we reach the end of the file while (decoder.readSamples(sampleArray, 0, sampleArray.length) > 0) {} } Can anyone tell me why this is taking so long?

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• graphing amplitude

  - by John

  I was wondering if someone could point me to a good tutorial or show me how to graph the amplitude from a bytearray. The audio format I am using is: ULAW 8000.0 Hz, 8 bit, mono, 1 bytes/frame.

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• Issue with Flash Player 10.

  - by Gans

  Some times when the URL is clicked it navigates to the videopage, but I am hearing audio but not seeing any video. Why might this be? I am using the latest version of Flash Player 10. The SWF in question was created in Flash 9 (CS2). var s1 = new SWFObject("flvplayer.swf","single","560","400","7"); === What is wrong with this?

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• Check to see if system volume is muted?

  - by Zachary Brown

  Hello everyone. I am working on a project that plays audio for part of the program. I would like to be able to display a message if the user's system volume is muted. I am using Python on Windows.

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• Given a WAV file, its file size and sample rate, is it possible to calculate the sample count?

  - by Simon

  Our app needs to know the sample count of the audio files it loads. The library we're using can reliably determine the sample rate, but not the sample count. Is it possible for us to calculate the sample count from just the file size and sample rate?

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• How to read MIDI file in C#?

  - by melculetz

  Do you know any library in C# that I can use in order to read an existing *.mid file? I want to draw the sound frequency graph for the MIDI file, but I cannot get the inner data. I tried using NAudio and Alvas.Audio, but I wans't able to read a MIDI file. Any suggestions?

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