

Now there is only about one cycle of pre- and post-ringing. By reducing the “sharpness” of the “knee” in the filter’s frequency response, the filter’s transient response is vastly improved. This type of filter was used in the “Listen” position of the original Ayre disc players. The first approach to solving the problems of a conventional digital filter was to use a filter with less ringing, often known as a “slow roll-off” filter. The booklet that came with the disc can be download from the DPA site, but is mainly a discussion of miking techniques used. The mic configurations are in the same order for each performance

The SACD/CD contains 7 performances, with 8 different mic configurations. flac format and the zip archive is 270Mb.Īs this is promotional material for DPA Microphones I believe there should be no issues sharing/spreading the word about DPA Microphones. This was released in 2007/8 and is long out of print.įiles are 44.1/16bit in. The was given away on request by DPA Microphones. Promotional CD illustrating techniques for miking a grand piano using their product range.

If anyone wants to contribute analog measurements of the filters they are welcome to do so. I'll post up response curves measured directly from the filter parameters I post up, and ask anyone else contributing filters to do the same, to make comparisons more straight forward. I'll look at doing higher sample rates when I'm happy with the 44.1 files. My intention is to put together a collection of basic filters starting with:Īt the moment I'm planning on working on 44.1khz versions of the filters as these influence the sound more than at higher sampling rates.

Rather than clogging up the main vendor thread with posts and discussion about alternative filters, it seems more useful to corral all the information into one spot.
