| B. C. J. Moore, An Introduction to the psychology of hearing, Academic Press, London, 4th edition, 1997. |
.... (1) is anyway the optimal rule to obtain the best performance out of a possibly noisy multi stream system (but it requires perfect knowledge about which stream, if any, is noisy) Moreover, a similar rule can usually explain some of the empirical observations in audio visual processing (see, e.g. [24] and [20] Although pretty simple, rule (1) is not always easy to interpret (and even less for engineers ) So let us have a closer look at it. Since the probability of being correct whenever we assign a particular observation x to a class q is equal to the a posteriori probability P (qjx) ....
Moore, B.C.J., An Introduction to the Psychology of Hearing (4th Edition), Academic Press, 1997.
....or multiple echo. It is clear that an efficient mechanism for the analysis and recognition of complex tones represents an evolutionary advantage for an organism. In this light, the pitch percept may be seen as an effective one parameter categorization of sounds possessing some spectral periodicity [2, 3, 4, 5]. Virtual Pitch For a harmonic stimulus like Fig. 1b (a periodic signal) there is a natural physical solution to the problem of encoding it with a single parameter: take the fundamental component of the stimulus as the pitch and all other components are naturally recorded as the higher ....
Moore, B. C. J. An Introduction to the Psychology of Hearing. Academic Press, (1997).
....systems in general, not just musical instruments, I will give some reasons that sensor controlled audio systems should be of interest to anyone working with sensors and input systems. One reason is that human hearing has much higher temporal precision than vision, touch, smell, or taste [8], so the challenges (and rewards) of building satisfyingly responsive real time systems are greatest when the output is sound. Another reason is that systems along the lines of Figure 1 Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted ....
Moore, B.C.J. An Introduction to the Psychology of Hearing. Academic Press, London, 1997.
....audio using headphones such as in head localization (IHL) and the externalization of sound. 1.1 What Exactly is Sound Sound results from the rapid variations in air pressure caused from the vibrations of an object (e.g. a vibrating guitar string, human vocal chords etc. or an object in motion [92]. As shown in Figure 1.1, sound waves consist of alternating regions of compression Figure 1.1: Sound waves consist of alternating regions of compression and rarefaction (e.g. back and forth motion) of the air molecules (top) corresponding to the high and low points of a sine wave ....
.... pressure are passed through to the middle ear and converted (transduced) into electrical signals in the inner ear and ultimately coded into a pattern of neuronal spikes which are interpreted by the brain (a complete discussion of the physiology of the ear is beyond the scope of this report see [92, 16] for greater details) However, the pattern of sound pressure variations arriving at our ears may not necessarily be identical to the pressure variations originally generated by the vibrating object. In order to propagate, sound waves require a medium (e.g. they are mechanical waves and therefore ....
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B. C. J. Moore. An Introduction to the Psychology of Hearing. Academic Press Limited, San Diego, CA. USA, 3 edition, 1989.
....music piece. In addition, for melodic instruments which have a pitch and harmonic structure, the notes are often related by harmonic intervals as well. When two partials fall within one critical band, the ear will not hear two separate sounds, but rather one combined sound. This is explained in [1]: When two sinusoids with slightly different frequencies are added together, they resemble a single sinusoid, with frequency equal to the mean frequency of the two components, but whose amplitude fluctuates at a regular rate. These fluctuations in amplitude are known as beats . These beats ....
Brian C.J. Moore, An introduction to the psychology of hearing, Academic Press, 1997.
....making a distance measure more useful. It would be desirable to tie this to psychoacoustic principles as the ear acts as a filterbank, Figure 2: Block Diagram of Proposed Onset Detection Scheme. GO and G1 represent the low pass and high pass CQF filters respectively. however, it has been shown [10] that the time localisation of sound onsets is not frequency dependant above 200Hz, but appears to be linked to the bandwidth of the signal at the onset. A block diagram of the overall hybrid subband scheme is shown in figure 2. 3. DETECTION FUNCTIONS The detection function from each subband ....
....defined as those with a greater value for P (t) within the 50ms window before any subband onsets are discarded. This can be inferred because hard onsets should appear as strong across several subbands. It is documented that human listeners detect transients more easily as their bandwidth increases [10]. 6. RESULTS The proposed onset detection scheme was tested with a range of signals. A variety of instruments, as well as performance and musical styles were tested. For each signal tested, onset points were assigned by a listener beforehand. Due to the time consuming nature of this, short ....
B.C.J. Moore, An Introduction to the Psychology of Hearing, Academic Press, fourth edition, 1997.
....introduces a frequency dependent smoothing kernel that mimics the auditory masking behaviours of the ear. It therefore provides TF representations of audio signals which feature time and frequency resolutions matching those of our hearing. 2. AUDITORY MASKING AND THE EARWIG DISTRIBUTION Masking [1] is a key feature in all auditory perception. It occurs when a relatively weak signal component is rendered inaudible (masked) by a relatively strong signal component (masker) if both are either temporally or spectrally close. Thus, in many cases much of a given audio signal s content is actually ....
....ear is necessary. The EarWig distribution (EWD) achieves this by using a frequency dependent smoothing kernel with time and frequency resolutions exactly matching two well estabished models of auditory temporal and spectral resolution namely the temporal window model and the gammatone filterbank [1]. This means that the EWD simultaneously incorporates both spectral and temporal masking and registers only unmasked (i.e. perceptually relevant) signal detail. 100 199 395 786 1562 0.05 0 0.05 0.1 0.15 80 60 40 20 0 Time, sec Relative Excitation Level, dB Figure 1: EWD ....
Moore, B. C. J., An Introduction to the Psychology of Hearing, Academic Press, 1997.
....audio using headphones such as in head localization (IHL) and the externalization of sound. 1.1 What Exactly is Sound Sound results from the rapid variations in air pressure caused from the vibrations of an object (e.g. a vibrating guitar string, human vocal chords etc. or an object in motion [87]. As shown in Figure 1.1, sound waves consist of alternating regions of compression and rarefaction (e.g. back and forth motion) of the molecules comprising the medium [148] typically air although sound can also propagate through other mediums such as wa3 Figure 1.1: Sound waves consist of ....
.... pressure are passed through to the middle ear and converted (transduced) into electrical signals in the inner ear and ultimately coded into a pattern of neuronal spikes which are interpreted by the brain (a complete discussion of the physiology of the ear is beyond the scope of this report see [87, 15] for greater details) However, the pattern of sound pressure variations arriving at our ears may not necessarily be identical to the pressure variations originally generated by the vibrating object. As mentioned above, in order to propagate, sound waves require a medium (e.g. they are mechanical ....
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B. C. J. Moore. An Introduction to the Psychology of Hearing. Academic Press Limited, San Diego, CA. USA, 3 edition, 1989.
....can be obtained by using the perceptually weighted distortion (15) where is the weighted input SEW prototype and is the quantized and weighted SEW prototype. It can be shown [21] that the above distortion is equivalent to (16) The magnitude is perceptually more significant than the phase [26] and should therefore be quantized first. Furthermore, if the phase were quantized first, the very limited bit allocation available for the phase would lead to an excessively degraded spectral matching of the magnitude in favor of a somewhat improved, but less important, matching of the waveform. ....
B. C. J. Moore, An Introduction to the Psychology of Hearing. London, U.K.: Academic, 1989.
....was calculated by creating a summary correlogram (similar to that used in section 2.2) using frequency channels contained within the complex tone group. Only segment channels below 1. 1 kHz were used for this summary since low frequency (resolved) harmonics are known to dominate the pitch percept [8]. Darwin et al. also showed that the effect of mistuning was diminished when the fourth harmonic was captured from the complex by four preceding tones at the same frequency. In this situation, no matter how small the mistuning, the harmonic is segregated from the complex and does not influence ....
....asynchrony can cause a harmonic to be segregated from a complex tone. It is interesting to note that a good match to Darwin s pitch shift data (Figure 2D) was only found when harmonically related segments below 1.1 kHz were used. The dominance of lower (resolved) harmonics on pitch is well known [8], and our findings suggest that the correlogram does not accurately model this aspect of pitch perception. 0 50 100 150 200 250 300 350 20 40 60 80 100 120 Figure 4: Asynchronous onset of the fourth harmonic causes it to segregate into a separate stream. The attentional interest vector ....
Moore, B. C. J. (1997) An introduction to the psychology of hearing. Academic Press.
....of the Earcons [11] these guidelines have been based on non spatialised presentations of single Earcons. They do not refer to spatialised placement, or multiple concurrent occurrences of Earcons. Almost all of the research into the limits of spatialisation, the minimum audible angle (MAA) [14, 15], stream analysis [16] and so forth deals with either noise, speech or long musical compositions. We have identified therefore, that there is a lack of research into the limits of extracting information from multiple, spatialised, structured audio sources. For example, we have no evidence to show ....
B.C. J. Moore, An Introduction to the psychology of hearing, 4th ed. London: Academic Press, 1997.
....the mass of the bones provide impedance (mass reactance) Both these reactances cancel at about 1kHz where the only attenuation is due to frictional losses. The reaction of the ossicles muscles to low frequency sound is slightly delayed and this phenomena is referred to as the acoustic reflex [11]. This reflex is thought to be a protective mechanism against high intensity, low frequency sound, with a reaction time of at least 15ms [6] There is a need to explain this reflex mechanism to more young people as they need to realise that it has little chance of protecting against techno music ....
....morphologically distinct groups. A single row of inner hair cells (IHC) and three to five rows of outer hair cells (OHC) There are approximately 3,500 flask shaped IHCs, each with about 40 cilia protruding from each hair cell and approximately 12,000 tube shaped OHCs, each with about 140 cilia [11]. The IHCs cilia are arranged in shallow curves whereas the outer hair cilia form V shaped rows (see Figure 4) Inner Hair Cell Outer Hair Cell Afferent Fibre Efferent Fibre Efferent Fibre Afferent Fibres Stereocilia Figure 4: Distinction between the inner and outer hair cells. Note that ....
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Moore, B., (1997) An Introduction to the Psychology of Hearing', Academic Press, San Diego.
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B. C. J. Moore, An Introduction to the psychology of hearing, Academic Press, London, 4th edition, 1997.
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Moore, B. (1982), An Introduction to the Psychology of Hearing, Academic Press.
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Moore , B. C. J., An Introduction to the Psychology of Hearing. 3rd ed. 2001: Academic Press Limited, San Diego, CA. USA.
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MOORE,B.C.J. 1997. An Introduction to the Psychology of Hearing, 4th ed. Academic Press, London.
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B. C. J. Moore, An Introduction to the psychology of hearing, Academic Press, London, 4th edition, 1997.
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Moore, B. C. J., An introduction to the Psychology of Hearing, 3rd edition 2001: Academic Press Limited, San Diego, CA, USA.
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Moore, B.C. An Introduction to the Psychology of Hearing. London: Academic Press. 1989, 1-10.
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Moore, B.C.J. (1989). An Introduction to the Psychology of Hearing, pp 1-10. London: Academic Press.
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Moore, B. An introduction to the Psychology of Hearing, Academic Press, New York, 1997.
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Moore, B. An introduction to the Psychology of Hearing, Academic Press, New York, 1997.
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Moore, B. C. J. An Introduction to the Psychology of Hearing. Academic Press, San Diego, CA, 1997, p. 212.
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Moore, B. C. J. An Introduction to the Psychology of Hearing. Academic Press, San Diego, CA, 1997, p. 361.
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Moore, B. C. J. An Introduction to the Psychology of Hearing. Academic Press, San Diego, CA, 1997, pp. 63-65.
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Moore, B.C.J., An introduction to the Psychology of Hearing, San Diego, CA: Academic Press, 1997.
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B. C. J. Moore. An Introduction to the Psychology of Hearing. Academic Press, San Diego, CA, 1997.
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B.C.J.Moore. An Introduction to the Psychology of Hearing. Academic press, 4 edition, 1997.
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B. C. J. Moore. An introduction to the psychology of hearing. Academic Press, second edition, 1982.
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B.C.J. Moore. An Introduction to the Psychology of Hearing. Academic Press, 1982.
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MOORE, B. C. 1997. An introduction to the psychology of hearing.
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B. C. J. Moore, An Introduction to the psychology of hearing, Academic Press, London, 4th edition, 1997.
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Brian C.J. Moore, An introduction to the psychology of hearing, Academic Press, 1997.
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B.C.J. Moore. An Introduction to the Psychology of Hearing. Academic Press, 4th edition, 1997.
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B. C. J. Moore. An Introduction to the Psychology of Hearing. Academic Press Limited, San Diego, CA. USA, 3 edition, 1989. 13
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B. C. Moore, An introduction to the psychology of hearing. Academic Press, 4th ed., (1997).
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Moore, C.J., (1997) An introduction to the psychology of hearing. 4 th edition, Academic Press
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B. C. J. Moore. An Introduction to the Psychology of Hearing. ACADEMIC PRESS, 1989.
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Moore, B. C. J. (1989). An Introduction to the Psychology of Hearing (Academic Press, San Diego, CA), pp 76-78.
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B. C. J. Moore. An Introduction to the Psychology of Hearing. Academic Press, Boston, MA, 1989.
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B. C. J. Moore, An Introduction to the Psychology of Hearing, ACADEMIC PRESS, 1989.
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Moore B.C.J. An Introduction to the Psychology of Hearing. Academic Press, San Diego, CA, 1997.
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B. C. J. Moore. An Introduction to the Psychology of Hearing. Academic press, San Diego, 1997, ISBN 0-12-505627-3.
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B.C.J. Moore. An introduction to the psychology of Hearing. Academic Press, 4th edition, 1997.
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B. C. J. Moore. An Introduction to the Psychology of Hearing. Academic Press Limited, San Diego, CA. USA, 3 edition, 1989.
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B. C. J. Moore, An Introduction to the Psychology of Hearing, New York: Academic Press, 1997, See also http://www-ccrma.stanford.edu/~jos/bbt/.
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B. C. J. Moore, An Introduction to the Psychology of Hearing, Academic Press, San Diego, fourth edition, 1997.
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B. C.J. Moore. An Introduction to the Psychology of Hearing. Academic Press, San Diego, CA, 1997.
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B. C. J. Moore, An Introduction to the Psychology of Hearing, Academic Press, San Diego, (1997).
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Brian C. J. Moore. An Introduction to the Psychology of Hearing. Academic Press Limited, London, third edition, 1989.
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