• raynovich

    Ah that all makes sense. When I perform the piece or practice it, I use an external sound card, but was just running some operations in the computer. So, I guess I will have to start testing the system with the external soundcard at all times. Thanks for the quick responses.

    I have learned to keep as few windows open at one time.

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  • raynovich

    Drop outs occurring. . .

    My newest patch is making lots of dropout in the audio playback. Too many operations. I am looking for what operations to reduce, but any help with my situation would be appreciated.

    My computer:

    Macbook Pro
    Processor: 2.6 GHz 6-core Intel Core i7
    Graphics: Intel UHD Graphics 1536
    Memory:16GB 2400 MHZ DDR4

    In Pd 54.1 I have these settings right now, but I would like to reduce the delay at least:

    44100k sampling (I would like to go to 48k)
    50ms Delay (I would like this to get down to at least 30ms)
    64 Block Size

    Is there something obvious I need to do? The computer is over five years old.

    I am using intensive additive synthesis, delays, reverb units, among other operations.

    Help. . . .

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  • raynovich

    Thanks for all the ideas.
    I do keep wi-fi on, so I will turn that off and as many items as I can, like bluetooth?

    The CPU load is getting up to 60%.

    As for the Activity monitor it is getting Pd is taking up more than 80% at times. I am also trying to implement a process where I turn on and off using switch~ the osc~'s. I am worried that that may not be a good idea.

    I will continue to work on it.

    As I am playing live with the additive synthesis portions of the piece am not sure I can go to 80ms delay, but I can see if that helps.

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  • raynovich

    Good morning all,
    I am working on employing additive synthesis in my new work. I am building the infrastructure of the piece and running into a problem.

    I right now have probably over 200 osc~ objects (And I would like more), freeverb~ objects, distortion objects, and other objects I have created in developing this piece.

    I am using a Pd 0.54.1 on a macOS, sample rate 48000, Delay (msec) 30, block size 64,

    The mac has a 2.6 GHz 6-Core Intel Core i7, Memory 16GB 2400 MH DDR4, macOS 13.6.6.

    I am getting clicking noises in the output. I am assuming I am overloading the system.

    Any thoughts and help would be appreciated.

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  • raynovich

    thanks. Got it and it works and your help is much appreciated.

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  • raynovich

    Hey all,
    So, what is the functional use of snake~?

    I can get the object to work if there is a direct connection to a snake~ out.

    However, I tried to use a send~ to a receive~ object with a name like test_snake, and the receive outlet only recognizes the first variable.

    Am I doing something wrong? I could see the use of this object if I could send the data to another object, but cannot think of the right object to use to send all of the channels of data.

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  • raynovich

    Oh boy. I did not do a search appropriately. Disregard. :( Sorry for wasting space.

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  • raynovich

    I am attempting to use sigmund~ to detect low frequencies.

    I am putting an osc~ to detect lowest frequencies.

    It seems sigmund~ cannot detect frequencies below 45 hertz.

    Here is the object I am using:

    sigmund~ -hop 65536

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  • raynovich

    Thank you! 1 sample. seems pretty amazing. Thanks though

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  • raynovich

    Hey all,
    Just asked a question about latency in audio processing and trying to get cpitchshift to work as best I can and have it be most effective.

    I am trying to use cpitchshift to pitch shift down an octave right now mostly and trying to do it by an octave.

    For this operation I am trying to downshift an octave using 2048 window size. In the right inlet I am sending -10.5. , , , but read on. . .

    So my questions:

    1: So, using cpitchshift I believe the variable that you put in the right inlet is the pitchshift using integers as half-steps. But it seems to be off. I tried -12 but the pitch was not an octave. Not even close. I adjusted the float to -10.5 to get approximately an octave. Any ideas? These are low notes I am trying to get. Think 98 hertz to 49 hertz, for instance.

    2: What is the latency if I am using 2048 window size? Is there a way to determine the latency?

    3: The NB quote at the end: Upwards pitch shifting is limited by the buffer size (1000ms = ca. 3 1/2 octaves at window size 4096.) What does this mean?

    4: If I am trying to get very low pitches what between 20 - 75 hertz, what buffer size should I use?

    I think that is the gist of my questions. Help. :)

    posted in technical issues read more

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