Acourate - AudioVero

Acourate - the High-End Audio Toolbox

The powerful software enables you

• to measure your audio system
  

• to display, interpret and process measurement data
  

• to carry out multiple mathematical calculations
  

• to generate crossovers and other FIR filters
  

• to identify reverberation times
• to establish correction filters for speaker drivers and the listening room
• to identify harmonic distortions
• to filter WAV tracks
• to play music tracks for test purposes

• System requirements
  

Acourate includes all functions required for generating audio filters of the highest quality

Price incl. 19 % VAT: 495 €
net Price (non-EU countries): 416 €

Whether you want to optimize the playback of music in your listening room, or you want to build an active multi-way speaker system, Acourate is the right tool for the purpose. Discover the world of FIR filters. Learn all about your sound system and get the maximum performance from it.

Not everyone has the chance to hear music in a dedicated special listening envirnment.  Most music lovers try to use high-grade sound systems in their living room. But this does not sound the best. The reason is simple, the result can be disastrous - we have to live with physics and in most cases with our given listening environment.

The reality:
Common multi-way systems with passive frequency crossovers change the timing of the original sound. Tweeters play first, the midrange drivers follow and finally the bass sound arrives.  The sound wave propagated from the loudspeaker is reflected many times at the floor, the ceiling and at the side walls, at the furniture and other fitments. It will be jumbled, absorbed and boosted. At the end the signal arriving at the listening position is quite different from the signal sent to the speakers.

The solution:
The sound arriving at the listening postion is measured and analyzed. The quality of the direct sound is analyzed preferentially within an adjustable time window. In combination with a target function (adjustable by the user according to his listening habits and preferences) a correction filter is calculated. The music signal will be corrected by the filter during playback. Thus an optimized sound will arrive at the listening position.
Low frequencies cause standing waves in any room, also decribed as room modes. Some frequencies will be boosted, others will be attenuated. The room correction avoids too loud playback levels by attenuating the corresponding frequency range. Weak levels will be boosted carefully to a higher level.
Acourate applies a pschoacoustic analysis to ensure correction filters fitting to the human ears. The standard the correction is carried out at 32768 frequencies (bins) over the full frequency range. But an even higher resolution is possible if desired.
Furthermore Acourate corrects timing errors of the room and the speakers by a phase correction. The target is to get as close as possible to an ideal step response, the best possible coherence and similarity of response between the loudspeakers.
As a result the music reproduction is improved regarding tonality, sound stage, focusing, transparency, clarity, resolution and attention to detail.

Further functions:
Acourate supports the setup of a fully active speaker system with digital frequency crossovers. Functions like Butterworth filters, Linkwitz-Riley filters, Neville-Thiele filters, Bessel filters and also Horbach-Keele filters are available. The speaker drivers can be linearized individually. Time delays between the drivers (caused by the different positions of the acoustic centers) can be detected and corrected easily. The crossover frequencies can also be verified and optimized by checking the harmonic distortions of the individual drivers. This way an optimal loudspeaker can be built in a synthesis procedure.

Advantages of Acourate:

• filters without compromise for a pleasing sound
  

• all calculations carried out in double floating point precision
  

• you see what you get - all data are displayed in the time, frequency and phase charts
  

• time optimization by phase correction
  

• simple use despite many included functions