摘要:
Digital circuit multiplication equipment (DCME) refers to coding bit rate information included in a pseudo-speech signal. In accordance with the coding bit rate information, the DCME selects either a coded speech signal extracted by a transmission bit rate restorer (19) or a coded speech signal including bit rate identification information added by a coding bit rate information adding section (30), and supplies the selected coded speech signal to a bearer line. The DCME can solve a problem of a conventional DCME in that a mismatch can take place between the actual transmission bit rate of the coded speech signal and the transmission bit rate assigned to the bearer line when providing the variable bit rate DCME with a tandem passthrough function, and therefore the correct coding bit rate information cannot be transferred to a speech decoder, bringing about serious degradation in the speech quality.
摘要:
A speech transmitting device includes a signal processing unit for carrying out plural types of speech signal processes by using a speech signal in a received packet, an alignment state detecting unit for detecting an alignment state of the received packet, and a process selecting unit for selecting a speech signal process which corresponds to the alignment state being detected by the alignment state detecting means, based on a selection reference used to select the speech signal process in correspondence to the alignment state of the received packet, and then outputting a result which is processed by the signal processing means according to the selected speech signal process.
摘要:
A speech transmitting device includes a signal processing unit for carrying out plural types of speech signal processes by using a speech signal in a received packet, an alignment state detecting unit for detecting an alignment state of the received packet, and a process selecting unit for selecting a speech signal process which corresponds to the alignment state being detected by the alignment state detecting means, based on a selection reference used to select the speech signal process in correspondence to the alignment state of the received packet, and then outputting a result which is processed by the signal processing means according to the selected speech signal process.
摘要:
Digital circuit multiplication equipment (DCME) refers to coding bit rate information included in a pseudo-speech signal. In accordance with the coding bit rate information, the DCME selects either a coded speech signal extracted by a transmission bit rate restorer (19) or a coded speech signal including bit rate identification information added by a coding bit rate information adding section (30), and supplies the selected coded speech signal to a bearer line. The DCME can solve a problem of a conventional DCME in that a mismatch can take place between the actual transmission bit rate of the coded speech signal and the transmission bit rate assigned to the bearer line when providing the variable bit rate DCME with a tandem passthrough function, and therefore the correct coding bit rate information cannot be transferred to a speech decoder, bringing about serious degradation in the speech quality.