HAMR@ISMIR 2015 Proceedings

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====== Sawaal-Jawaab ======

| Authors | Ajay Srinivasamurthy, Swapnil Gupta, Sankalp Gulati, Kaustuv Kanti Ganguli |
| Affiliation | Music Technology Group, UPF, Barcelona |
| Code | [[https://bitbucket.org/swapnilgt/sawaaljawaab]] |

===== Summary =====

This hack is a sawaal-jawaab (call-response) machine improvisation system for vocals and Tabla. Tabla is the primary percussion instrument used in Hindustani music and is characterized by onomatopoeic vocal syllables that represent the different strokes played on it. The syllables, called the **bols**, are used as mnemonics in music learning (oral tradition). Additionally, reciting these syllables during a tabla solo performance is common and is in itself an art form. 

During Hindustani music concerts, it is common to have a call-response improvisatory passages between musicians, called a sawaal-jawaab (literally, question-answer). It is also common in tabla solos to have a sawaal-jawaab between a musician reciting vocal syllables and a response by the musician playing the tabla. We explore such an improvisation in this hack - with the call being the vocal recitation of syllables. The response is an improvisation of the call built using timing, rhythmic and timbral features from the call, exploiting the onomatopeioc nature of the tabla bols. Such an improvisation is done within the framework of a specific taal, the rhythmic framework of Hindustani music. 

To try out, select the metrical cycle you wish and a tempo you are comfortable with. There are both audio and visual cues of the progression through the cycle. There are audio clicks marking the sections of the cycle, with the downbeat (called the sam) having a different click. The downbeat is shown with a red dot, with the beats blinking in green. Click and hold down the record button, the system starts recording from the next downbeat and records your response. Release the record button and wait for the response - also aligned with the downbeat. The complete response mainly has three parts - a theka (basic pattern of the taal), followed by a semi randomized response to the call, and cycle long tihai (a polyrhythmic concluding phrase). 





  * Sawaal-Jawaab (or call and response) between two musicians is a popular improvisatory passage within a concert of Hindustani music. 
  * The strokes of the tabla (the primary rhythmic accompaniment) have onomatopoeic oral mnemonics (called the bols) that are used in learning. Reciting such vocal syllables is itself an art form. 
  * Vocal bols v/s Tabla strokes is a popular sawaal-jawaab
  * We do a sawaal-jawaab with vocal bols and tabla
  * Sing the bols to see what the jawaab from the improvisatory system is!


====== Taals, Bols, and Tabla =======

====== Typical Sawaal-Jawaab ====

====== Dataset and Resources ====

====== Improvisation Algorithm ====

====== Demo =====
HAMR@ISMIR 2015 Proceedings

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