recording

问题 There is a feature in GarageBand that allows you to record iChat Audio sessions directly into GarageBand. When you are the host of an iChat conference ( you called the other party/parties), you can open GarageBand and hit record, and GarageBand will ask you if you wish to record the conference. Say yes, and GarageBand creates distinct tracks for all members of the conference, and records isolated audio from them into their own channel, complete with their username (or real name as determined

问题 I am trying to record the voice in android But it will create the .mp3 file on the path (sdcard/filename) But when i run this file it doesen't play because it doesn't record the voice. Here is My code public void onClick(View v) { // TODO Auto-generated method stub switch(v.getId()){ case(R.id.Button01): try { //audio.start(); startRecord(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } case(R.id.Button02): //audio.stop(); stopRecord(); } } private void

问题 I was googling this problem for many days but I didn't find a solution for my simple problem. I'm trying to play a video while recording sound. Recording sound works fine without the video. And the video works fine without the recording. As soon as I put both together, the recording throws values which do not react on sound and the video is not playing anymore. By the way this happens only on my device (iPhone 4 / iOS5). In the simulator everything works fine. This is a reduced version of my

问题 I am working on a project where we will be using iPhones as cameras for capturing a scene. When recording we need to record @60fps and not 30fps (as natively supported). So I am working on an app to do this as the iPhone 4S hardware supports 720p@60fps (if you jailbreak your phone you can achieve this). Does anybody know how to do this in Objective-C on iOS? Today I saw an app out there (slopro) that can record 60fps on non jailbroken phones. Any advice or tips is much appreciated. 回答1: After

问题 I'm trying to make it to where I can record the users voice and play it back in the same activity using the MediaRecorder and AudioTrack. I just don't understand how to write the file to AudioTrack. I've read the documents on both and simply can't figure it out. Any help would be appreciated. Here's my code so far, it's not complete. The only buttons you need to read are recordButton and playbackButton. Thanks! private File outputFile = null; private AudioTrack voice = null; private

问题 I have been working on a research project which involves making audio recordings to perform some digital signal processing analysis. To aid me in my recording, my research supervisor has provided me with an i436 microphone. It looks like this. However, before making the recording he has asked me to calibrate the device. I have a rather blurry idea of what calibration means. Since different microphones may have different intensities / recording conditions, they will generate different results

问题 I have an urgent requirement of capturing the audio stream on click of buttons. eg: I play different sounds on click of buttons like in piano. Now i want to capture these sounds played in a single file. The possible ways I tried are - 1) I merged the sound files played into a single file. (in this case: the merged file has written data of all sound files, however it plays only the first sound file- not the other appended sound files.) 2) I then tried merging files using javax.sound, but

问题 I am writing an application that uses the AVAudioRecorder class. It works great except for when a phone call comes in. I am handling this per apple's guidelines of using the AVAudioRecorderDelegate methods – (void) audioRecorderBeginInterruption: – (void) audioRecorderEndInterruption: It works great until the interruption ends and I attempt to "resume" the recording by calling the record method again (per the documentation). However it does not resume my recording but instead throws out the

问题 I would like to know if there is a way to fix the duration of recording using mobile's microphone. Like when I click a button the recording should start and it should stop after 5 seconds on its own, what method do you propose me to use :-) Edit: Sorry for the confusion but I am using AudioRecorder class to record data and I don't think the MediaRecorder class function works properly (/at all) for the same. 回答1: If you just use a timer, I do not think that you can accurately control how much

问题 Which tool would you recommend for macro recording and replaying ? Is there a language as well ? I frequently switch between Eclipse and Emacs(actually Xemacs) for editing tasks. It would be nice if I didn't have to do as frequently. That would happen if a macro language/recorder were available in eclipse. It's available in Netbeans, so how come that is not a priority for eclipse ? 回答1: There is no current macro language on Eclipse: Practical Macro is not compatible with current 3.5 or 3.6