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searching for Octave band 14 found (23 total)

Noise reduction coefficient (991 words) [view diff] exact match in snippet view article find links to article

not impact the NRC rating (since the NRC does not include the 125 Hz octave band). There is potential for greater error or overemphasizing the acoustic

Sound reduction index (1,141 words) [view diff] exact match in snippet view article find links to article

to 50 Hz and/or up to 10 kHz. The measured levels in each 1/3 octave band (or octave band) from the source room (or area) (S) are then compared to the

Sound level meter (6,302 words) [view diff] no match in snippet view article find links to article

61672:2013) IEC61260 Ed. 1.0 (2014) Electroacoustics – Octave-band and fractional-octave-band filters ANSI S1.11-2004 (R2009) IEC61252 Ed. 1.1 (2002–03)

Harmonic wavelet transform (1,086 words) [view diff] exact match in snippet view article find links to article

Fourier transforms are a square window function (constant in a certain octave band and zero elsewhere). In particular, they satisfy: ∫ − ∞ ∞ w ∗ ( 2 j t

Royal Festival Hall (3,389 words) [view diff] exact match in snippet view article find links to article

700 Hz, increasing reverberation time from 1.4 to 2.5 s in the 125 Hz octave band. However, the system never fully solved the problem, and as it aged it

Air Movement and Control Association (3,017 words) [view diff] exact match in snippet view article find links to article

of Fans Using Sound Intensity establishes a method of determining the octave band sound power levels of a fan. The sound power levels are determined using

List of IEC standards (17,117 words) [view diff] no match in snippet view article find links to article

equipment educational materials IEC 61260 Electroacoustics – Octave-band and fractional-octave-band filters IEC 61261 Piezoelectric ceramic filters for use

EPNdB (547 words) [view diff] exact match in snippet view article find links to article

decibels relative to a sound pressure of 20 micropascals for each one-third-octave band. The individual band sound pressure levels are converted to "noy" values

Wavelet (7,230 words) [view diff] exact match in snippet view article find links to article

discrete-time (sampled) signal by using discrete-time filterbanks of dyadic (octave band) configuration is a wavelet approximation to that signal. The coefficients

Speech transmission index (2,326 words) [view diff] exact match in snippet view article find links to article

using a simplified method and test signal. Within the STIPA signal, each octave band is modulated simultaneously with two modulation frequencies. The modulation

Music rehearsal space (1,846 words) [view diff] exact match in snippet view article find links to article

properties compared to classical acoustic music. It specifies the 63 Hz octave band should be considered in designing a practice room and when sourcing absorption

Auditory fatigue (3,758 words) [view diff] exact match in snippet view article find links to article

phocoena) and harbor seals (Phoca vitulina) exposed to white noise in a 1/1-octave band around 4 kHz". The Journal of the Acoustical Society of America. 129

Curved structures (2,588 words) [view diff] exact match in snippet view article find links to article

Spatial distribution of reverberation time (T30) in 1 kHz octave band (Royal Palace of Caserta, main staircase). One of the available acoustic analyses

Physics of whistles (12,644 words) [view diff] exact match in snippet view article find links to article

can be a nearly pure tone. The figure on the left shows a one-third octave band spectrum taken under a glider flyover; the tone is 15 dB above the broad