ITU recommendation P.862, PESQ was developed for measuring speech quality in a wide variety of conditions. This paper shows that PESQ can also be used for measuring speech intelligibility. An experiment was set up to evaluate speech intelligibility in the presence of two interfering talkers at 4 SNR conditions (0, -3, -6, and -9 dB), using 100 sentences in each condition, with five normal heari...

This paper performs a comparative analysis of the perceived quality of (unidirectional, non-interactive) VoIP calls under various wireless network conditions (e.g., handover, high traffic demand). It employs the PESQ tool, E-model and auditory tests to evaluate the impact of these network conditions on the perceived quality of VoIP calls. It also reveals the inability of PESQ and E-model to cap...

In VoIP applications, packet loss is a major source of speech impairment. Such a loss normally occures in bursts, rather than at random. In this paper, we report an investigation on how subjects perceive bursty losses and how current objective measurement methods, such as PSQM, MNB, EMBSD, and in particular, the latest ITU standard, PESQ correlate with subjective test results under burst loss c...

The purpose of this paper is to investigate the accuracy of PESQ and 3SQM in predicting voice quality over live 3G networks. We set up an Asterisk-based testbed to measure voice quality over 3G mobile networks. 192 experiments with speech samples from the ITU-T database were recorded via 3G mobile phones and the results of the objective measurements were analyzed. We further selected 30 samples...

U radu je provedena analiza postojećeg širokopojasnog i alternativnog uskopojasnog komunikacijskog sustava pomorskih VHF radiotelefonskih komunikacija, zasnovanih na simulacijskom modelu. Alternativni sustav predložen je od strane ITU organizacije kao jedno od mogućih rješenja problema nedostatka komunikacijskih kanala u pomorskom VHF području. Pomoću računalnih simulacijskih modela ispitan je ...

Additive noise degrades speech quality and intelligibility. Speech enhancement reduces this to make more pleasant intelligible. It plays a significant role in recognition or speech-operated systems. In paper, we propose single-channel method which the log-minimum mean square error (log-MMSE) modified accelerated particle swarm optimization algorithm are used design filter for improving intellig...

We discuss objective estimation methodologies for subjective quality of wideband speech. First, the wideband extension of the current ITU-T Recommendation P.862, which provides a means for objectively estimating subjective quality, is evaluated from the viewpoint of assessing the effects of band limitation. Then, the validity of the objetive assessment is discussed based on the subjective quali...

This paper presents a novel speech enhancement approach based on compressive sensing (CS) which uses long short-term memory (LSTM) networks for the simultaneous recovery and of compressed signals. The advantage this algorithm is that it does not require an iterative process to recover signals, makes fast straight forward. Furthermore, proposed prior knowledge signal noise statistical properties...

Bir koklear implant (Kİ) işlemcisinde, kanal sayıları, bant genişlikleri, doğrultma tipi ve kesme frekansı gibi çeşitli parametreler, gelişmiş konuşma elde etmede önemli bir rol oynamaktadır. Etkili genel amaçlı Kİ yaklaşımı uzun süredir araştırma konusu olmuştur. Bu çalışmada, farklı sayıları (4, 8, 12, 16 22), tipleri (yarım tam dalga) frekansları (200, 250, 300, 350 400 Hz) kullanılarak kull...

Temporal modulation processing is a promising technique for improving the intelligibility and quality of speech in noise. We propose enhancement algorithm that constructs temporal envelope (TEV) time-frequency domain by means an embedded convolutional neural network (CNN). To accomplish this, input signals are divided into sixteen parallel frequency bands (subbands) with bandwidths approximatin...