Audio frequency control * * * @api */ class AudioFrequency extends BaseQualifier { const FREQ8000 = 8000; const FREQ11025 = 11025; const FREQ16000 = 16000; const FREQ22050 = 22050; const FREQ32000 = 32000; const FREQ37800 = 37800; const FREQ44056 = 44056; const FREQ44100 = 44100; const FREQ47250 = 47250; const FREQ48000 = 48000; const FREQ88200 = 88200; const FREQ96000 = 96000; const FREQ176400 = 176400; const FREQ192000 = 192000; /* * Initial audio frequency */ const IAF = 'iaf'; /** * Audio Frequency 8000. * * @return AudioFrequency */ public static function freq8000() { return self::createAudioFrequency(self::FREQ8000); } /** * Audio Frequency 11025. * * @return AudioFrequency */ public static function freq11025() { return self::createAudioFrequency(self::FREQ11025); } /** * Audio Frequency 16000. * * @return AudioFrequency */ public static function freq16000() { return self::createAudioFrequency(self::FREQ16000); } /** * Audio Frequency 22050. * * @return AudioFrequency */ public static function freq22050() { return self::createAudioFrequency(self::FREQ22050); } /** * Audio Frequency 32000. * * @return AudioFrequency */ public static function freq32000() { return self::createAudioFrequency(self::FREQ32000); } /** * Audio Frequency 37800. * * @return AudioFrequency */ public static function freq37800() { return self::createAudioFrequency(self::FREQ37800); } /** * Audio Frequency 44056. * * @return AudioFrequency */ public static function freq44056() { return self::createAudioFrequency(self::FREQ44056); } /** * Audio Frequency 44100. * * @return AudioFrequency */ public static function freq44100() { return self::createAudioFrequency(self::FREQ44100); } /** * Audio Frequency 47250. * * @return AudioFrequency */ public static function freq47250() { return self::createAudioFrequency(self::FREQ47250); } /** * Audio Frequency 48000. * * @return AudioFrequency */ public static function freq48000() { return self::createAudioFrequency(self::FREQ48000); } /** * Audio Frequency 88200. * * @return AudioFrequency */ public static function freq88200() { return self::createAudioFrequency(self::FREQ88200); } /** * Audio Frequency 96000. * * @return AudioFrequency */ public static function freq96000() { return self::createAudioFrequency(self::FREQ96000); } /** * Audio Frequency 176400. * * @return AudioFrequency */ public static function freq176400() { return self::createAudioFrequency(self::FREQ176400); } /** * Audio Frequency 192000. * * @return AudioFrequency */ public static function freq192000() { return self::createAudioFrequency(self::FREQ192000); } /** * Retain the original audio frequency of the video. * This applies when using vc_auto where the audio frequency defaults to 48kHz. * * @return AudioFrequency */ public static function iaf() { return self::createAudioFrequency(self::IAF); } /** * Creates a new instance of the AudioFrequency class. * * @param int|string $qualifier The audio frequency. * * @return AudioFrequency */ protected static function createAudioFrequency($qualifier) { return new self($qualifier); } }