Music to spectrogram on iOS with the accelerate framework
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// AudioFile.h
// SpectogramPrototype
// Created by Joshua Moerman on 28/12/13.
// Copyright (c) 2013 Joshua Moerman. All rights reserved.
#import <Foundation/Foundation.h>
// Uses the ExtAudioFileRef from the AudioToolkit
// Handles conversion to PCM and such
@interface AudioFile : NSObject
// Loads a file (and sets the right internal format)
+ (AudioFile*) audioFileFromURL:(NSURL*) url;
// Reads nSamples of data (left channel), return actual number of samples read
- (BOOL) fillLeft:(float*)left andRight:(float*)right forRange:(NSRange)range;