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2014/10/16 ¤W¤È 08:23:27
android Programming Glossary: samplingFix 3GP file after streaming from Android Media Recorder http://stackoverflow.com/questions/11994470/fix-3gp-file-after-streaming-from-android-media-recorder for you. You have to be making an assumption on perfect sampling rate of video frames and your audio will have to be amr to assume..
how to convert or record .wav file in 16khz 16bit mono little-endian? http://stackoverflow.com/questions/12260476/how-to-convert-or-record-wav-file-in-16khz-16bit-mono-little-endian or 2 . i need to convert the prerecorded file with any sampling rate with the 16khz 16bit mono little endian format in java....
Android out of memory when assigning variables http://stackoverflow.com/questions/14116757/android-out-of-memory-when-assigning-variables the image by using inSampleSize attribute. For more on sampling you can refer this link . Try playing with different options...
http://stackoverflow.com/questions/16017165/auto-fit-textview-for-android best size At least optimize it and don't increment your sampling by 1 each time. In case of multi line should allow to prefer..
BitmapFactory.decodeStream returning null when options are set http://stackoverflow.com/questions/2503628/bitmapfactory-decodestream-returning-null-when-options-are-set you have to create a new InputStream for the actual sampling of the image. Options options new BitmapFactory.Options options.inJustDecodeBounds..
Android 2.3 Visualizer - Trouble understanding getFft() http://stackoverflow.com/questions/4720512/android-2-3-visualizer-trouble-understanding-getfft k is given by Fk k Fs N k 0 1 ... N 1 where Fs is the sampling frequency of the time series input N is the number of samples..
Android SENSOR_DELAY_FASTEST isn't fast enough http://stackoverflow.com/questions/5060628/android-sensor-delay-fastest-isnt-fast-enough a robot but SENSOR_DELAY_FASTEST only provides a 10Hz sampling rate which is simply not fast enough. Is there a way of sampling.. rate which is simply not fast enough. Is there a way of sampling even faster Is there a way of polling the sensors rather than.. rather than waiting for a SensorEvent android sensor sampling share improve this question Is there a way of sampling even..
Playing back sound coming from microphone in real-time http://stackoverflow.com/questions/5728454/playing-back-sound-coming-from-microphone-in-real-time int audioSource MediaRecorder.AudioSource.MIC private int samplingRate 44100 in Hz private int channelConfig AudioFormat.CHANNEL_CONFIGURATION_MONO.. private int bufferSize AudioRecord.getMinBufferSize samplingRate channelConfig audioFormat private int sampleNumBits 16 private.. 1 AudioRecord recorder new AudioRecord audioSource samplingRate channelConfig audioFormat bufferSize recorder.startRecording..
Android audio FFT to retrieve specific frequency magnitude using audiorecord http://stackoverflow.com/questions/5774104/android-audio-fft-to-retrieve-specific-frequency-magnitude-using-audiorecord the frequencies that have actual values. You need the sampling frequency to convert the array indices to such magnitudes to..
Convert bitmap array to YUV (YCbCr NV21) http://stackoverflow.com/questions/5960247/convert-bitmap-array-to-yuv-ycbcr-nv21 for every 4 Y pixels there are 1 V and 1 U. Note the sampling is every other pixel AND every other scanline. yuv420sp yIndex..
How to draw waveform of Android's music player? http://stackoverflow.com/questions/6317842/how-to-draw-waveform-of-androids-music-player would be greatly appreciated android audio music waveform sampling share improve this question There is an Android class called..
How to merge two mp3 files into one (combine/join) http://stackoverflow.com/questions/6731155/how-to-merge-two-mp3-files-into-one-combine-join Consider two cases for MP3 files a Files with same sampling frequency and number of channels In this case we can just append.. File classes available on Android. b Files with different sampling frequency or number of channels. In this case one of the clips.. clips has to be re encoded to ensure both files have same sampling frequency and number of channels. To do this we would need to..
Android accelerometer accuracy (Inertial navigation) http://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation tested the system by again placing it on the table and sampling 5000 accelerometer readings in the X and Y directions. I would..
Why FPS is not same as original camera app http://stackoverflow.com/questions/8676046/why-fps-is-not-same-as-original-camera-app seeing these results is that your callback is getting a sampling of the video rather than the actual video. When the camera is..
Fix 3GP file after streaming from Android Media Recorder http://stackoverflow.com/questions/11994470/fix-3gp-file-after-streaming-from-android-media-recorder and it writes that in the mp4 header at the end. So no good for you. You have to be making an assumption on perfect sampling rate of video frames and your audio will have to be amr to assume 20ms packets. In other audio cases you will start seeing..
how to convert or record .wav file in 16khz 16bit mono little-endian? http://stackoverflow.com/questions/12260476/how-to-convert-or-record-wav-file-in-16khz-16bit-mono-little-endian the 16khz 16bit mono little endian file format in wave file or 2 . i need to convert the prerecorded file with any sampling rate with the 16khz 16bit mono little endian format in java.. i need to implement one of above feature..so can anyone help..
Android out of memory when assigning variables http://stackoverflow.com/questions/14116757/android-out-of-memory-when-assigning-variables can increase the inTempStorage size to make it work or sample the image by using inSampleSize attribute. For more on sampling you can refer this link . Try playing with different options. It should work. 2 You can also increase you App's overall..
http://stackoverflow.com/questions/16017165/auto-fit-textview-for-android not be slow in computation. Using a loop for finding the best size At least optimize it and don't increment your sampling by 1 each time. In case of multi line should allow to prefer resizing or using more lines and or allow to choose the lines..
BitmapFactory.decodeStream returning null when options are set http://stackoverflow.com/questions/2503628/bitmapfactory-decodestream-returning-null-when-options-are-set you can't rewind and use the same InputStream again. Therefore you have to create a new InputStream for the actual sampling of the image. Options options new BitmapFactory.Options options.inJustDecodeBounds true BitmapFactory.decodeStream is null..
Android 2.3 Visualizer - Trouble understanding getFft() http://stackoverflow.com/questions/4720512/android-2-3-visualizer-trouble-understanding-getfft share improve this question The frequency at FFT output sample k is given by Fk k Fs N k 0 1 ... N 1 where Fs is the sampling frequency of the time series input N is the number of samples used to compute the FFT The two sides of the spectrum refers..
Android SENSOR_DELAY_FASTEST isn't fast enough http://stackoverflow.com/questions/5060628/android-sensor-delay-fastest-isnt-fast-enough isn't fast enough I'm using the sensors to balance a robot but SENSOR_DELAY_FASTEST only provides a 10Hz sampling rate which is simply not fast enough. Is there a way of sampling even faster Is there a way of polling the sensors rather.. a robot but SENSOR_DELAY_FASTEST only provides a 10Hz sampling rate which is simply not fast enough. Is there a way of sampling even faster Is there a way of polling the sensors rather than waiting for a SensorEvent android sensor sampling share.. of sampling even faster Is there a way of polling the sensors rather than waiting for a SensorEvent android sensor sampling share improve this question Is there a way of sampling even faster SENSOR_DELAY_FASTEST is a 0ms delay. You cannot have..
Playing back sound coming from microphone in real-time http://stackoverflow.com/questions/5728454/playing-back-sound-coming-from-microphone-in-real-time file after it's written. Here is the code variables private int audioSource MediaRecorder.AudioSource.MIC private int samplingRate 44100 in Hz private int channelConfig AudioFormat.CHANNEL_CONFIGURATION_MONO private int audioFormat AudioFormat.ENCODING_PCM_16BIT.. private int audioFormat AudioFormat.ENCODING_PCM_16BIT private int bufferSize AudioRecord.getMinBufferSize samplingRate channelConfig audioFormat private int sampleNumBits 16 private int numChannels 1 AudioRecord recorder new AudioRecord.. audioFormat private int sampleNumBits 16 private int numChannels 1 AudioRecord recorder new AudioRecord audioSource samplingRate channelConfig audioFormat bufferSize recorder.startRecording isRecording true AudioTrack audioPlayer new AudioTrack..
Android audio FFT to retrieve specific frequency magnitude using audiorecord http://stackoverflow.com/questions/5774104/android-audio-fft-to-retrieve-specific-frequency-magnitude-using-audiorecord results. Most of the magnitudes should be close to zero except the frequencies that have actual values. You need the sampling frequency to convert the array indices to such magnitudes to frequencies private double ComputeFrequency int arrayIndex..
Convert bitmap array to YUV (YCbCr NV21) http://stackoverflow.com/questions/5960247/convert-bitmap-array-to-yuv-ycbcr-nv21 interleaved planes of VU each sampled by a factor of 2 meaning for every 4 Y pixels there are 1 V and 1 U. Note the sampling is every other pixel AND every other scanline. yuv420sp yIndex byte Y 0 0 Y 255 255 Y if j 2 0 index 2 0 yuv420sp uvIndex..
How to draw waveform of Android's music player? http://stackoverflow.com/questions/6317842/how-to-draw-waveform-of-androids-music-player Display but I'm not exactly sure how to do it. Help would be greatly appreciated android audio music waveform sampling share improve this question There is an Android class called Visualizer that lets you access audio being played http..
How to merge two mp3 files into one (combine/join) http://stackoverflow.com/questions/6731155/how-to-merge-two-mp3-files-into-one-combine-join bounty android audio inputstream share improve this question Consider two cases for MP3 files a Files with same sampling frequency and number of channels In this case we can just append the second file to end of first file. This can be achieved.. second file to end of first file. This can be achieved using File classes available on Android. b Files with different sampling frequency or number of channels. In this case one of the clips has to be re encoded to ensure both files have same sampling.. frequency or number of channels. In this case one of the clips has to be re encoded to ensure both files have same sampling frequency and number of channels. To do this we would need to decode MP3 get PCM samples process it to change sampling frequency..
Android accelerometer accuracy (Inertial navigation) http://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation subtracting this value from each subsequent reading . I then tested the system by again placing it on the table and sampling 5000 accelerometer readings in the X and Y directions. I would expect given the calibration that these accelerations should..
Why FPS is not same as original camera app http://stackoverflow.com/questions/8676046/why-fps-is-not-same-as-original-camera-app android fps share improve this question The reason you're seeing these results is that your callback is getting a sampling of the video rather than the actual video. When the camera is dumping it's output to the file system it's doing a very low..
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