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Impulcifer
Measurement and processing of binaural impulse responses for personalized surround virtualization on headphones.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
If you're even more keen and willing to spend money and time, there's also Impulcifer which actually measures your own ears using in-ear mics and generates an HRIR from that. It's basically a much cheaper/open version of the Smyth Realiser.
NOTE:
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Hence, a higher number means a more popular project.