Isaac Audio

The numbers behind the Dogma series

Measured.
Not modeled.

Every Dogma plug-in has a mathematical definition: the analog prototype of an EQ band, the static curve of a compressor, the ideal continuous-time version solved between the samples. We measure the built plug-in against that definition and publish the gap. The figures below are real — reproduced by our test suite on every build, measured on the shipping binary through its plug-in interface, not hand-picked.

The reference

The analog prototype or the exact continuous-time ideal — not another plug-in, and not our own engine checking itself.

The binary

We load the built .clap like a host and measure what actually ships, at 44.1 to 192 kHz.

Every build

The whole suite reruns in CI. A number that drifts fails the build, so what you read here is what you download.

Dogma Q

Analog-matched EQ

Every band follows its analog prototype all the way to 20 kHz, with no latency. Where an ordinary digital EQ warps near the top of the spectrum, Dogma Q stays on the curve — measured across every sample rate.

0.0053 dBworst-case deviation from the analog prototypes, up to 90 kHz at 192 kHz — 17 settings per rate
0 diffbit-for-bit in the default mode: the output is the input exactly
−306 dBTHD+N, 1 kHz through every band in use (64-bit host)
66 / 0measurements on the built plug-in, zero failed

Deviation from the analog prototype, by sample rate

Worst case across 17 EQ settings. The dashed line is 0.1 dB — roughly the smallest level change most people can hear. Every bar sits far below it.

Dogma C

Lab-precision compressor

The audio path is a single multiplication — no filter, no delay, no phase shift, only gain. The reference isn't "follows the static formula"; it's the ideal continuous-time compressor, solved between the samples. Dogma C measures itself against that.

−178 to −214 dBIdeal mode, every detector, vs the exact continuous-time compressor
−93 to −118 dBZero-Latency mode (RMS), with no added latency at all
0 diffat 0 dB of gain reduction the output is bit-for-bit the input — nothing but gain touches the audio
−40.0250 dBa measured transfer point landing on |H| to four decimals

Dogma DES

Lab-precision de-esser

What isn't taken comes out exactly as it went in. Between the S's the vocal is untouched — bit for bit — and the key filter is the exact analog response, not a bilinear approximation that drifts near the top.

bit for bitbelow threshold, and the unprocessed channel at 0% stereo link, come out exactly the input
−140.7 dBkey filter vs the analog prototype (Lab quality), 100 Hz–18 kHz
−165 dBTHD+N at constant attenuation: once the gain settles, it's clean gain
2.2e−7 dBgain-reduction read-back error — measured by least-squares sine fit

Dogma IR-REV

Convolution reverb

Real spaces at zero latency. The engine is non-uniformly partitioned — a short head on the audio thread, a long tail in the background — so even a ten-second impulse response plays with no latency, and the result matches the reference convolution.

0 samplesmeasured latency, wet and dry — the first output sample lands exactly where it should
−145.8 dBresidual vs the reference convolution model (limit −80 dB)
exactsample-rate conversion to the project rate, to the sample; stereo in parallel is each channel alone, bit for bit

Dogma IR-C

Impulse-response capture

Measure any room, cabinet or piece of hardware and load it straight into IR-REV. The capture chain uses regularized spectral division — and against a known reference sweep it beats the standard Farina and Novak methods, with a full ISO 3382 report on every measurement.

−110.8 dBmisalignment vs the known reference IR (ours) — against −98 to −99 dB for the standard methods
7.5e−14 %residual THD on the clean IR — distortion harmonics separated out
ISO 3382EDT, T20, T30, C50, C80, D50 per octave, with multi-point averaging

Reconstruction error vs the known reference IR — capture method

RMS magnitude error on the ideal reference sweep, lower is better. Our regularized division reaches less than half the error of the published Farina and Novak methods.

Isaac Audio — regularized divisionPublished methods

These are a selection of the headline figures. Each plug-in's full report — hundreds of measurements, at every sample rate, on the shipping binary — is produced by our test suite and travels with the build. Want to run your own tests? The beta is open.