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Search found 40 results on 2 pages for 'waveform'.

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• High quality graph/waveform display component in C#.

  - by dlopeztt

  Hi, I'm looking for a fast, professionally looking and customizable waveform display component in C#. I'm wanting to display mainly real-time audio waveforms (fast!) in both time and frequency domain. I would like the ability to zoom, change axis settings, display multiple channels, customize the feel and colors etc... Anybody knows of anything,…

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• Drawing a waveform in C#

  - by user488792

  Hi! I want to be able to display a WaveForm in C#, along with some simple features such as zooming and selection. I already have the data as a short[] of amplitude values. However, I am an amateur when it comes to hardcoding GUI. I have already found a possible helper class WaveFormClass that may help me achieve this but as a backup, I want to…

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• Drawing Color Spectrum with Waveform

  - by TheDarkIn1978

  i've come across this ActionScript sample, which demonstrates drawing of the color spectrum, one line at a time via a loop, using waveforms. however, the waveform location of each RGB channel create a color spectrum that is missing colors (pure yellow, cyan and magenta) and therefore the spectrum is incomplete. how can i remedy this problem so…

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• Is there a PHP library to generate an waveform images out of an audio file?

  - by mystify

  Maybe something like this exists already?

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• Trimming bit of the beginning off a recorder waveform

  - by Lowgain

  I've got a flash 10.1 app that lets me record microphone input to a wav without a media server, which I am saving to an Amazon S3 bucket. I have another process running on a server which gets wavs from this bucket, converts to mp3 using LAME and puts them into another bucket. This all works fine, but in converting wav mp3, about 0.1sec or so…

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• On the fly volume normalization (waveform capping) for VLC or OS X

  - by Grammar Nazi

  I'm looking to impose a hard limit on a movie. In particular when I have earbuds in and a reasonable volume set, loud or sudden sounds (gun shot, dramatic sound effects, gun fire, etc) are loud enough to hurt. Lowering the volume makes speech and other sounds hard to hear. Is there a third party on-the-fly solution for this, or a plug-in for…

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• On the fly volume compression (waveform capping) for VLC or OS X

  - by Grammar Nazi

  I'm looking to impose a hard limit on a movie. In particular when I have earbuds in and a reasonable volume set, loud or sudden sounds (gun shot, dramatic sound effects, gun fire, etc) are loud enough to hurt. Lowering the volume makes speech and other sounds hard to hear. Is there a third party on-the-fly solution for this, or a plug-in for…

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• How to generate sound from a waveform Data

  - by ajay-sharma2

  Hi All I have to make a project in ipad and my problem is that I have to play a sound generated from a wave form/wave form data. Can some one suggest me how to do that or any tutorial or reference for that. Thanks in advance. Regards Ajay Sharma

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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…

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• How to write C++ audio processing applications?

  - by cesko82

  Hi everyone, I'm an Electronics and Telecommunications student, next to my graduation. I'm gonna work on a project that involves my knowledge about DSP, music and audio in general. I allready know all the basic mathematic instruments and all the stuff I need to manage it, such as FFT, circular convolution ecc ecc. I want to learn C++…

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• Creating simple waveforms with CoreAudio

  - by Koning Baard

  I am new to CoreAudio, and I would like to output a simple sine wave and square wave with a given frequency and amplitude through the speakers using CA. I don't want to use sound files as I want to synthesize the sound. What do I need to do this? And can you give me an example or tutorial? Thanks.

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• Create a Sin wave line with Processing

  - by Nintari

  Hey everybody, first post here, and probably an easy one. I've got the code from Processing's reference site: float a = 0.0; float inc = TWO_PI/25.0; for(int i=0; i<100; i=i+4) { line(i, 50, i, 50+sin(a)*40.0); a = a + inc; } http://processing.org/reference/sin_.html However, what I need is a line that follows the curve of…

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• How to draw audio waveforms on a UIView ?

  - by Biranchi

  Hi All, How to draw audio waveforms on a UIView ?

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• How to implement low pass filter using java

  - by chai

  Hello Everyone, I am trying to implement a low pass filter in Java. My requirement is very simple,I have to eliminate signals beyond a particular frequency (Single dimension). Looks like Butterworth filter would suit my need. Now the important thing is that CPU time should be as low as possible. There would be close to a million…

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• How Do I Convert text to a WAV file With Inaudible Waveform?

  - by Scott

  I am trying to create an audio watermarking system. I figure the best solution is to create an audio file (WAV) based on a unique string of text and then combine this with the original wav. The part that makes this tricky (for me anyway) is: How do I convert the text string to a wav? How do I ensure that the resulting WAV form…

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• How to repaint a form so that it does not disappear on minimizing?

  - by gn

  I have a form in which i paint a waveform on a button click that is as soon as i click button, the waveform displays. Now when i minimize the form and maximize it again, the waveform disappears.How to repaint it? I have seen people using paint event but i dont know how to use it after/inside the button click event. Please help.

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• What Qt container class to use for a sorted list?

  - by Dave

  Part of my application involves rendering audio waveforms. The user will be able to zoom in/out of the waveform. Starting at fully zoomed-out, I only want to sample the audio at the necessary internals to draw the waveform at the given resolution. Then, when they zoom in, asynchronously resample the "missing points" and provide a…

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• How to speed up drawing of scaled image? Audio playback chokes during window resize.

  - by Paperflyer

  I am writing an audio player for OSX. One view is a custom view that displays a waveform. The waveform is stored as a instance variable of type NSImage with an NSBitmapImageRep. The view also displays a progress indicator (a thick red line). Therefore, it is updated/redrawn every 30 milliseconds. Since it takes a rather long…

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• Remove a child of root of XML using java

  - by Sachin Mhetre

  This is my xml file. - <deviceparameters> - <parameter componenttype="TextBox"> <name>Operating Type</name> <oid>1.3.6.1.4.1.31163.5.1.1</oid> <writable>true</writable> <description>The operating type defines which waveform…

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• Looking for audio-sample-managing/librarian software

  - by Fuxi

  hi all, i'm looking for a good software for managing audio samples (.wav) it should be capable of: quickly browsing through directory/file-structure (eg. cursorkeys) + autoplay waveform-vizualisation + possibility to set cursor position (for playing) possibility to create own favourite-folder-structure + quickly sort in…

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• Generating an LPCM buffer in memory for AVAudioPlayer initWithData

  - by iter

  I want to generate a sound wave programmatically and play it with AVAudioPlayer. I have the code to encode my waveform as linear PCM, 44100Hz, mono, 8 bits per sample. I am not clear on what kind of envelope I need to wrap around this buffer so that AVAudioPlayer recognizes it as PCM.

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• FMOD on non-playing audio

  - by coldrising

  Hey, is there any way to get the audio spectrum of a section of a song using FMOD if it is not playing? Can I render a full song waveform using FMOD (+opengl/openframeworks/etc.) before the song is playing?

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• Silverlight audio components

  - by Shurup

  Do you know any good commertial or free audio / sound components that can be used in Silverlight (better on the client)? Desired features: visualizing (waveform, peakform etc., zoom, editing volume, pan, start and end markers etc.) editing (channels: volume, pan, mute, fading, etc., merge, cut, copy, paste, etc., …

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• Simple wave generator with SDL in c++

  - by Vlad Popescu

  i am having problems understanding how the audio part of the sdl library works now, i know that when you initialize it, you have to specify the frequency and a callback<< function, which i think is then called automatically at the given frequency. can anyone who worked with the sdl library write a simple example…

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• Real-time spectrum analyzer with API

  - by bobobobo

  I'm looking for a C or C++ API that will give me real-time spectrum analysis of a waveform on Windows. I'm not entirely sure how large a sample window it should need to determine frequency content, but the smaller the better. For example, if it can work with a 0.5 second long sample and determine frequency content…

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