accurate sound

 1) We help you measure your room

2) You email us your file

3) We do the engineering

4) We send you a calibrated file

5) Enjoy!

hear music the way artists intended

What We Do

We calibrate sound systems to industry standards

We calibrate loudspeakers in rooms to the same industry standards used in professional recording studios. See Standards.

Accurate Sound Calibration using DSP

Calibration is achieved through the use of Digital Signal Processing (DSP) software, and if required, acoustic room treatments. See DSP.

Accurate Sound Reproduction

Once calibrated, the music arriving at your ears matches as close as        possible to how it was intended to sound by the artists. See Testimonials

Digital Room Correction Talk

Mitch Barnett talking about Digital Room Correction (DRC) with David Snyder for the San Francisco Audiophile Society 

image12

The top left and right channels are an acoustic frequency response measurement of a 3-way stereo system in a typical living room with the measurement mic placed at the listening position. Note the 20 dB SPL variation in the bass and lower mid-range frequencies. To our ears, while listening to music on this system, some bass notes will sound 4 times as quiet or loud, depending on the adjacent frequencies. In other words, the uneven bass response is due to the physical dimensions of the listening room, independent of loudspeakers used.. 


Virtually every listening room has the problem of uneven bass response. To understand why the listening room is the issue and not the loudspeakers, our article on, "Understanding Digital Room Correction for Audiophiles." explains it in detail. The solution is Digital Room Correction. 


The bottom left and right channels are the measured frequency response after Digital Room Correction. In addition to even bass response, the overall frequency response is within studio control room monitoring tolerances. Optionally, the high frequency response has been tailored for the listeners preference in relation to how much high frequency direct sound is arriving at one's ears.


The end result is an optimized sound reproduction system with extended and even bass response that is solid and transient. The overall frequency response is much flatter and within the same tolerances as specified for studio control room monitoring. Because the frequency and timing response between channels is virtually identical, the stereo image arriving at one’s ears is perfect. These are the benefits of creating a custom designed digital room correction filter for your room, loudspeakers and listening preferences.


To learn more about Digital Room Correction, see our Digital Signal Processing page and section DSP Resources.

how we do it

1) Requirements

3) Solution Report

1) Requirements

  1. Send pics and dimensions of your listening room.
  2. Listing of your audio equipment and description of signal path.
  3. Measure your system and send us your REW .mdat file for a free analysis.

2) Analysis

3) Solution Report

1) Requirements

  1. Initial analysis to determine if measurements fall within operational limits.
  2. Compare measurement to industry standard specs.
  3. Create initial DSP filter design and/or acoustic treatment design.

3) Solution Report

3) Solution Report

4) DSP Filter and Acoustic Design

  1. Comparison of measures to industry standards and a description of the differences.
  2. Preliminary DSP filter design and/or acoustic treatment design.
  3. Deliver solution report options with pros and cons for each.

4) DSP Filter and Acoustic Design

4) DSP Filter and Acoustic Design

4) DSP Filter and Acoustic Design

  1. Run our proprietary software algorithm to calculate best FDW settings for your room.
  2. Finalize DSP design and generate up to 6 correction filters.
  3. Finalize acoustic treatments design (if required).

5) Accurate Sound Delivery

4) DSP Filter and Acoustic Design

6) Fine tuning and verification

  1. Deliver up to 6 DSP filters compatible with your music player. (DSP software licence may be required). 
  2. Deliver acoustic design.
  3. Provide implementation support on how to compare filters to determine your preference.

6) Fine tuning and verification

4) DSP Filter and Acoustic Design

6) Fine tuning and verification

  1. Fine tune DSP filters based on listening feedback.
  2. Re-run measurements with correction filters and/or acoustic  treatments in place for design verification.
  3. Enjoy the music!