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If i record audio in noisy background and then compare recorded audio file with local saved audio file to check both are same song are not ? In iPhone
How Shazam and Sound Hound app works to generate Fingerprint of recorded audio in iPhone?
can anyone explore knowledge on algorithm to generate Fingerprint from audio file in ios.
Thanks
The fast (but possibly not very helpful) answer is: They probably do a Fourier Transform of the audio and compare. If you have never heard of Fourier before, you may want to find an API for it - the transform itself is not a programming problem, it's a math/signals problem.
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I have a video and audio streaming urls.I want to check the user's band width if its slow it should play the audio. If its fast enough should play the video. How can I check whether the bandwidth is slow or fast in swift
m3u8 Structure
#EXTM3U
#EXT-X-VERSION:3
#EXT-X-STREAM- INF:BANDWIDTH=814508,CODECS="avc1.66.51,mp4a.40.34",RESOLUTION=720x576
chunklist_w247403833.m3u8
If your video and audio files are of the same content, then you should be able to configure a m3u8 file for your needs. I've not done this in practice but you should be able to create a m3u8 file like the example below and Apple's media streamer should then automatically detect the bandwidth and play the appropriate file, and as the bandwidth changes Apple should automatically switch files to provide the best experience
(you'll need to tweak the file below but this should give you a head start)
#EXTM3U
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=216000,RESOLUTION=400x300
amazingVideo.m3u8
#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=100000,RESOLUTION=400x300
justAudio.m3u8
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I work on iOS and I want to play many audio files, one after the other, without break, like it was an unique audio file.
When the audio player reads the first audio file, I don't have the next audio files, i need to update the queue, while playing.
Is it possible ?
I insist on "without break"
Thanks for help !
It is possible, have a look at StreamingKit
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I have a 3.5mm to IR sensor to connect to my headphone jack. I want to know if there's a way to create a basic app for my TV that will control it's Volume, Power On/Off, input, and number pad. I've kept researching for about a week now on how to do this, but haven't found an answer. Can someone help me?
Yes is it possible, you only need an application what play wav files.
Or jsut a file browser.
But you can find a plenty of applications and tutorials and details all over the internet.
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I'm making a video player for iOS Devices. I use a ffmpeg libraries to play the video files. I see the problems that have other video players in the App Store with the AC3 sound support.
I want that my video player don't works with AC3 sound. I'm looking for arguments in the compile script ffmpeg libraries like a --enable-gpl and --enable-nonfree, but not works.
I read the licenses of ffmpeg libraries several times and I think that I don't understand well.
Can someone explain how to do this?
Just add --disable-decoder=ac3 to ffmeg configure arguments.
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I saw that this company Mitek made an app that could read receipts through the iPhone's camera and record the information from them. (http://www.miteksystems.com/OOMPH_MobileReceipt.asp). My assumption would be that they run the images through some kind of image/text recognition software. Any ideas what what they might be using? If theres an API that can interpret text from pictures that would be great to.
cheers,
Mike
They are probably using some type of OCR software. It is hard to tell exactly which.
You can look at ocropus, for example