VolumetricCondensed

iustin sandu

Scientific Computing Specialist

d&b audiotechnik GbmH & Co. KG

About Me

I am a software engineer at d&b audiotechnik where I work on algorithm design, implementation and optimization. I get excited about clean architecture designs and I like to think that performance does not (always) have to sacrifice elegant architecture. I have an MSc in Audio Engineering and can play a few John Mayer songs on the acoustic guitar.

Sessions

  • Performance Implications of Frequency Domain Crossfading

    for Time-Varying FIR Filtering
    10:00 - 10:20 UTC | Monday 11th November 2024 | Bristol 2
    Beginner
    Intermediate

    A common strategy to avoid audible artifacts when exchanging impulse responses used for convolution with audio signals at runtime is to use a simple crossfade. This often requires more than double the amount of operations by filtering the input signal with both impulse responses separately (often in the frequency domain), and blending the resulting signals in the time-domain. If the crossfade was applied in the frequency domain, one IFFT operation could be eliminated, at the cost of two direct convolutions between the two signal spectra with the blending functions. Most of the time however, transforming each filtered signal separately back […]