David Piska, Autor RDacoustic.cz

Audio Background Noise

1.8.20204.8.2020David Piska

Our new listening studio is not for listening experiences only. It provides us with a good enough space to carry out different experiments, measurements and tests. This article deals with background noise measurements of an audio system, in the hearable spectrum. Using a microphone, we measure the noise coming directly from the speaker. We are going to compare a real noise of an amplifier, once powered directly from the power grid, once using RD EMI Neutralizer power filter.

Building a High End Listening Room 4: Fine-tuning the Acoustics

15.5.202024.6.2020David Piska

We bring you a comprehensive account of room acoustics in our listening studio in Rožnov pod Radhoštěm. We have acquired a space in which we were able to realise our demanding requirements, ultimately leading to the best possible acoustic properties of the reference room.

Building a High End Listening Room 3: QRD67H – Hybrid Diffuser

2.5.20204.5.2020David Piska

RDacoustic - Acoustic hybrid diffuser QRD67 ceiling

We finished a third step towards a perfect listening space. A hybrid acoustic diffuser now covers almost the entire ceiling. We tried to make a photo of it, but even a wide 10mm lens did not take all of it.

Building a High End Listening Room 2: Construction

21.4.202029.4.2020David Piska

The second step towards our new high end listening space is behind us.

Building a High End Listening Room 1: Goals

17.3.202014.4.2020David Piska

RDacoustic Listening Room REW Measurements

We are about to have a new listening room! On our hands, there is a space a construction of which we will be able to alter in order to reach ideal room proportions and gain the best possible listening space. The articles will be written continuously documenting the birth of the room. Ample acoustic and electrical measurements included.

Grounding Quality: not just for Audiophiles

18.1.202014.4.2020David Piska

How and why does the grounding potential influence our audio system and how to improve it.

Measuring Power Grid Interference in Practice

23.11.201912.12.2019David Piska

Would you like to know what interference occurs in the power grid? Why deal with filtration? To illustrate the problems, I have made measurements on four different places. For comparison, I went with a common EURO cable and the RD Power Filter.

We shall Plant a Tree for every Product Sold

2.11.201917.11.2019David Piska

Enjoying rock climbing as a free time activity, I feel close to nature and its sustainability. As a company, we do not wish to simply slide on the ecological wave, we want to actually act.

Acoustics Theory – Sound Behaviour in Closed Space

30.3.201921.5.2019David Piska

To understand sound behaviour in closed space better, we have to get into a bit of theory.

Room Acoustics: not just for Audiophiles

30.3.201922.4.2020David Piska

The most perfect speaker systems will not deliver great results if the acoustic conditions are lousy. Are you interested in improving your room acoustics? Read on.

Author: David Piska

Audio Background Noise

Building a High End Listening Room 4: Fine-tuning the Acoustics

Building a High End Listening Room 3: QRD67H – Hybrid Diffuser

Building a High End Listening Room 2: Construction

Building a High End Listening Room 1: Goals

Grounding Quality: not just for Audiophiles

Measuring Power Grid Interference in Practice

We shall Plant a Tree for every Product Sold

Acoustics Theory – Sound Behaviour in Closed Space

Room Acoustics: not just for Audiophiles

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