The Measurement and Calibration of Sound Reproducing Systems

Toole, Floyd E.

doi:10.17743/jaes.2015.0064

Cited by 11 publications

(10 citation statements)

References 16 publications

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“…The transfer function of each measurement point was obtained by dividing the measured response by the FFT of the delayed input signal. The magnitude response of each measurement point was extracted and smoothed by 1/10 th per octave to closer match human perception than typical 1/3 rd octave smoothing [30]. The 20-250 Hz FFT bins of each measurement point response were then used in Eq.…”

Section: Testing Methodsmentioning

confidence: 99%

Dynamic Diffuse Signal Processing for Sound Reinforcement and Reproduction

Moore¹,

Hill²

2018

J. Audio Eng. Soc.

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High inter-channel coherence between signals emitted from multiple loudspeakers can cause undesirable acoustic and psychoacoustic effects. Examples include position-dependent lowfrequency magnitude response variation, where comb-filtering leads to the attenuation of certain frequencies dependent on path length differences between multiple coherent sources, lack of apparent source width in multi-channel reproduction and lack of externalization in headphone reproduction. This work examines a time-variant, real-time decorrelation algorithm for the reduction of coherence between sources as well as between direct sound and early reflections, with a focus on minimization of low-frequency magnitude response variation. The algorithm is applicable to a wide range of sound reinforcement and reproduction applications, including those requiring full-band decorrelation. Key variables which control the balance between decorrelation and processing artifacts such as transient smearing are described and evaluated using a MUSHRA test. Variable values which render the processing transparent whilst still providing decorrelation are discussed. Additionally, the benefit of transient preservation is investigated and is shown to increase transparency.

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Section: Testing Methodsmentioning

confidence: 99%

Dynamic Diffuse Signal Processing for Sound Reinforcement and Reproduction

Moore¹,

Hill²

2018

J. Audio Eng. Soc.

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“…Bu sebeple küçük odalarda özellikle de kritik dinleme yapılan odalarda dinleme noktasına ulaşan erken yansımalar baskılanırlar. Ayrıca mix işlemi yapılan odalarda duyumdan odanın etkisini kaldırmak, yani akustik olarak "cansız" dinleme ortamları bazı ses mühendisleri tarafından daha iyi olarak tanımlanmıştır (Toole, 2015). (Tingen, 2021).…”

Section: Küçük Oda Akustiğinde Erken Yansımalarunclassified

Ev stüdyoları akustiğinde çalışma masalarından kaynaklanan erken yansımaların işitilen ses üzerindeki etkileri üzerine bir simülasyon çalışması

VERGİLİ

2022

Rast Müzikoloji Dergisi

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In acoustics, the rooms in which the music is created, recorded, mixed and mastered are classified under critical listening rooms. In professional recording studios, these rooms are meticulously built, based on detailed architectural and acoustical design processes and one of the main principles of the room’s acoustic design is to carry the direct signal from the speakers to the listener with as minimal acoustic coloration as possible. Nowadays, home studios also function as important critical listening spaces. Nevertheless, home studios show acoustical inconsistencies, difficulties, and even impossibilities in providing the acoustical criteria related to critical listening room acoustics. Early reflections are the cause of important aural deteriorations in small critical listening environments such as home studios. The “fidelity” of the direct sound emanating from the speakers is affected by the early reflections - bouncing off the lateral surfaces, ceilings, floors, work desks and the objects on the desks – which cause unwanted comb filtering in the frequency response. In this article, the acoustical deteriorations based on early reflections will be discussed, the adverse effects of early reflections reflecting from the desks in home studios will be evaluated through acoustical simulations. In the light of the measurement results and evaluations, it has been observed that the early reflections originating from the work tables have significant negative effects in the aural perception of lower and middle frequencies.

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“…There is no complete agreement on the optimal target response for loudspeaker/room response equalization, and no single target for all sound reproduction purposes and all listeners can be defined [29]. It is out of the scope of this paper to discuss the characteristics of an optimal, according to some criterion, target response for different sound reproduction systems and situations.…”

Section: Target Responsementioning

confidence: 99%