Hello All, I am new to ChucK but I've found it is very interesting and intuitive tool! I am interested in Latency issues of audio host. I've measured latencies on various hosts on standard Mac hardware (with on-board Intel HDA standard soundcard) with WindowsXP/MacOSx/Linux etc. So far linux has lowest overhead processing latency and also consistent as good as Mac or even better. I've tested ChucK on Mac OSX. The code I used is standard ADC one (http://chuck.cs.princeton.edu/doc/examples/basic/adc.ck) Buffer setting -> measured latency 16 samples -> 5ms 256 samples -> 20ms 512 samples -> 37ms In the console log messages, it always says: number of buffers 8. At sampling frequency of 44100Hz, so in theory: latency = (1/fs)*buffersize*8 16 samples -> 2.9 ms 256 samples -> 46.4 ms 512 samples -> 92.9 ms These two group of data doesn't seem consistent. I guess the buffer structure in ChucK is quite different with other audio hosts (normally they have both input buffer and output buffer). I am not quite understand the maths, can anyone give me some clue? How are the 8 buffers in ChucK arranged? I guess some buffers are in parallel otherwise the theoretical values wont be greater then measured values? I will try to test it on Linux/Jack soon that may be more consistent in terms of latency. Many thanks Y.Wang