record

Given : data MyRecord a = MyRecord{list :: [a], other_fields :: Char, …} I am trying to write a function which puts a new a on list and returns a new MyRecord : pushOntoList :: a -> MyRecord -> MyRecord Question : Is there a way to write pushOntoList is such a way that it does not depend on what is in the rest of the record, but simply gives it back unmodified? Another way to ask this is can you write pushOntoList without seeing the rest of the MyRecord definition? Yes, very easily using the record accessor/label syntax: b = a { list = 'x' : list a } as in the function: pushOntoList c a = a {

I am developing a chrome extension and I use chrome.tabCapture API to capture the stream from a tab of the chrome browser and to record the stream using MediaStreamRecorder.js . I could stop the recording of the stream using mediaRecorder.stop() but that chrome.tabCapture API doesn't end. It continously sends the stream. I need to stop the chrome.tabCapture API running for the particular tab. Try : stream.getVideoTracks()[0].stop(); To improve video quality, specify videoConstraints : chrome.tabCapture.capture({ videoConstraints: { mandatory: { maxWidth: 4000, maxHeight: 4000} }},

I'm trying to make an app that records sound for a second and then reads the maximum amplitude from the recorded sound. This is what I have so far but my app crashes and I can't figure out why. This is my second activity, which I'm calling from my first after I press a "Record" button. The app crashes on my emulator and on my phone. package radu.soundSampler; import java.io.IOException; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.widget.TextView; import android.media.MediaRecorder; public class DisplayMessageActivity extends Activity {

I'm developing iOS and Android application using Phonegap Build version 3.3.0. Main focus of application is audio recording with another audio / music playing in the background. For both instances i'm using phonegap media api with correct audio files for recording (iOs - *.wav / Android - *.amr ) and playing (iOs and Android - *.mp3). Example: var audioRec = new Media(audioRecSrc, onSuccess, onError); audioRec.startRecord(); var audioPlay = new Media(audioPlaySrc, onSuccess, onError); audioPlay.play(); Example works on Android without any problem. Sound is recorded and music played normally.

I want to recorder the sound, but the mic (microphone) input sound is too loud, and I want to adjust the mic volume, would someone help me? The following is the main code: private int audioSource = MediaRecorder.AudioSource.MIC; private static int sampleRateInHz = 8000; private static int channelConfig = AudioFormat.CHANNEL_CONFIGURATION_MONO; private static int audioFormat = AudioFormat.ENCODING_PCM_16BIT; audioRecord = new AudioRecord(audioSource, sampleRateInHz,channelConfig, audioFormat, bufferSizeInBytes); audioManager.setSpeakerphoneOn(false); When the microphone is open, it used the

While reviewing some code in our legacy Delphi 7 program, I noticed that everywhere there is a record it is marked with packed . This of course means that the record is stored byte-for-byte and not aligned to be faster for the CPU to access. The packing seems to have been done blindly as an attempt to outsmart the compiler or something -- basically valuing a few bytes of memory instead of faster access An example record: TFooTypeRec = packed record RID : Integer; Description : String; CalcInTotalIncome : Boolean; RequireAddress : Boolean; end; Should I fix this and make every record normal or

how to record audio as mp3 file by using AvAudiorecorder.i m using following code for recorder setting recordSetting1 = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithInt:AVAudioQualityMin],AVEncoderAudioQualityKey, [NSNumber numberWithInt:16], AVEncoderBitRateKey, [NSNumber numberWithInt: 2], AVNumberOfChannelsKey, [NSNumber numberWithFloat:44100.0], AVSampleRateKey,nil]; Add [NSNumber numberWithInt:kAudioFormatMPEGLayer3] forKey:AVFormatIDKey However it's impossible to encode mp3 format at IPhone because of royalty. Whilst you can play MP3 files using AVAudioPlayer , you can