A pitch detection algorithm (PDA) is an algorithm designed to estimate the pitch or fundamental frequency of a quasiperiodic or oscillating signal, usually a digital recording of speech or a musical note or tone. This can be done in the time domain, the frequency domain, or both. PDAs are used in various contexts (e.g. phonetics, music information retrieval, speech coding, musical performance systems) and so there may be different demands placed upon the algorithm. There is as yet no single ideal PDA, so a variety of algorithms exist, most falling broadly into the classes given below.
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| - Algoritmo di pitch detection (it)
- Pitch detection algorithm (en)
- 基音檢測算法 (zh)
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| - Un algoritmo di pitch detection (PDA) è un algoritmo capace di valutare la frequenza fondamentale di un segnale periodico o quasi periodico, generalmente una registrazione digitale della voce o di una nota musicale. Questa valutazione può essere fatta nel dominio del tempo, nel dominio della frequenza o in entrambi. Gli algoritmi PDA sono usati in vari contesti (fonetica, codifica vocale, performance musicali, recupero di informazioni dalla musica) perciò ci sono differenti richieste che l'algoritmo deve soddisfare. (it)
- 基音檢測演算法（英語：pitch detection algorithm，縮寫：PDA）是估計周期性或訊號的音高或基本頻率的算法。該算法主要用於語音或樂音的信號處理中。基音檢測算法既可以單獨從時域或頻域的角度實現，也可以同時利用時域和頻域。 基音檢測算法的用途廣泛，在語音學、音樂分析、語音編碼和電子音樂表演中均有重要位置。這些不同的需求使得通用算法的產生更為困難，故目前尚不存在完美的基音檢測算法，實際使用中有一系列算法共存。多數基音檢測算法大致可歸類為下述分類中的一種。 通常情況下，基音檢測算法會估計準周期性信號的周期。周期的倒數即為頻率。 (zh)
- A pitch detection algorithm (PDA) is an algorithm designed to estimate the pitch or fundamental frequency of a quasiperiodic or oscillating signal, usually a digital recording of speech or a musical note or tone. This can be done in the time domain, the frequency domain, or both. PDAs are used in various contexts (e.g. phonetics, music information retrieval, speech coding, musical performance systems) and so there may be different demands placed upon the algorithm. There is as yet no single ideal PDA, so a variety of algorithms exist, most falling broadly into the classes given below. (en)
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| - A pitch detection algorithm (PDA) is an algorithm designed to estimate the pitch or fundamental frequency of a quasiperiodic or oscillating signal, usually a digital recording of speech or a musical note or tone. This can be done in the time domain, the frequency domain, or both. PDAs are used in various contexts (e.g. phonetics, music information retrieval, speech coding, musical performance systems) and so there may be different demands placed upon the algorithm. There is as yet no single ideal PDA, so a variety of algorithms exist, most falling broadly into the classes given below. A PDA typically estimates the period of a quasiperiodic signal, then inverts that value to give the frequency. (en)
- Un algoritmo di pitch detection (PDA) è un algoritmo capace di valutare la frequenza fondamentale di un segnale periodico o quasi periodico, generalmente una registrazione digitale della voce o di una nota musicale. Questa valutazione può essere fatta nel dominio del tempo, nel dominio della frequenza o in entrambi. Gli algoritmi PDA sono usati in vari contesti (fonetica, codifica vocale, performance musicali, recupero di informazioni dalla musica) perciò ci sono differenti richieste che l'algoritmo deve soddisfare. (it)
- 基音檢測演算法（英語：pitch detection algorithm，縮寫：PDA）是估計周期性或訊號的音高或基本頻率的算法。該算法主要用於語音或樂音的信號處理中。基音檢測算法既可以單獨從時域或頻域的角度實現，也可以同時利用時域和頻域。 基音檢測算法的用途廣泛，在語音學、音樂分析、語音編碼和電子音樂表演中均有重要位置。這些不同的需求使得通用算法的產生更為困難，故目前尚不存在完美的基音檢測算法，實際使用中有一系列算法共存。多數基音檢測算法大致可歸類為下述分類中的一種。 通常情況下，基音檢測算法會估計準周期性信號的周期。周期的倒數即為頻率。 (zh)
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