TY - GEN
T1 - A channel vocoder using wavelet packets on a reconfigurable device
AU - Castañeda, César Daniel Salvador
PY - 2008
Y1 - 2008
N2 - A channel vocoder using wavelet packets for computer music applications is proposed. The input audio signals are a modulating voice and a carrier melody. The wavelet packets channel vocoder transforms windowed frames of both signals to a subband domain, mixes the melody with the voice envelope, and transforms back the result to the original domain. Design is performed with Matlab/Simulink tools and real time implementations with Pure Data and Virtex II Pro FPGA board. Appropriate choices of frame length, wavelets, decomposition levels and envelope detector filter are proposed to achieve good quality sound effects. Finally, guidelines to improve transmission and compression rates in a future work are suggested.
AB - A channel vocoder using wavelet packets for computer music applications is proposed. The input audio signals are a modulating voice and a carrier melody. The wavelet packets channel vocoder transforms windowed frames of both signals to a subband domain, mixes the melody with the voice envelope, and transforms back the result to the original domain. Design is performed with Matlab/Simulink tools and real time implementations with Pure Data and Virtex II Pro FPGA board. Appropriate choices of frame length, wavelets, decomposition levels and envelope detector filter are proposed to achieve good quality sound effects. Finally, guidelines to improve transmission and compression rates in a future work are suggested.
UR - https://www.scopus.com/pages/publications/84866502598
M3 - Contribución a la conferencia
AN - SCOPUS:84866502598
SN - 9781605602950
T3 - Audio Engineering Society - 124th Audio Engineering Society Convention 2008
SP - 966
EP - 974
BT - Audio Engineering Society - 124th Audio Engineering Society Convention 2008
T2 - 124th Audio Engineering Society Convention 2008
Y2 - 17 May 2008 through 20 May 2008
ER -