Pcm d50 digital sound recorder

The advertisement calls of the undescribed species were recorded from the holotype specimen CIBQY20200726001 in the field on 26 July 2020 from Qingyuan County, Zhejiang Province, China. When registrating the male in the stream the ambient air temperature was 21.5 °C and there was air humidity of 87%. For comparisons, the advertisement calls of M.kuatunensis from Wuyi Mountain, Fujian Province, China were recorded from the specimens CIBWY18082410, CIBWY18082411 and CIBWY18082412 at an ambient air temperature of 22.0 °C and air humidity of 88% on 24 August 2018. SONY PCM-D50 digital sound recorder was used to record within 20 cm of the calling individual. The sound files in wave format were resampled at 48 kHz with sampling depth 24 bits. The sonograms and waveforms were generated by WaveSurfer software (Sjöander and Beskow 2000 ) from which all parameters and characters were measured. Ambient temperature was taken by a digital hygrothermograph.

The advertisement calls of the new species from Huanglian Town, Tongzi County, Guizhou Province, China were recorded from the specimen CIBTZ20190608004 in the field on 8 June 2019. The advertisement calls were recorded from the ridge of a paddy field at ambient air temperature of 20 °C and air humidity of 80 %. For comparisons, the advertisement calls of N.daunchina from E’mei Mountain, Sichuan Province, China were recorded from the specimen CIB2011081603 at ambient air temperature of 20 °C and air humidity of 85 % in the ridge of paddy field on 16 August 2011; the advertisement calls of N.yaoica were retrieved from Lyu et al. (2019a) (link). SONY PCM-D50 digital sound recorder was used to record within 20 cm of the calling individual. The sound files in wave format were resampled at 48 kHz with sampling depth 24 bits. Calls were recorded and examined as described by Wijayathilaka and Meegaskumbura (2016) (link). Call recordings were visualised and edited with SoundRuler 0.9.6.0 (Gridi-Papp 2003–2007) and Raven Pro 1.5 software (Cornell Laboratory of Ornithology, Ithaca, NY, USA). Ambient temperature of the type and other localities was taken by a digital hygrothermograph.

The advertisement calls of the undescribed species were recorded from the holotype specimen CIBTZ20190608017 in a stream at ambient air temperature of 20.5 °C and air humidity of 87 % in the field on 8 June 2019 in Huanglian Nature Reserve, Tongzi County, Guizhou Province, China. The advertisement calls of M.sangzhiensis were recorded from the specimen CIBSZ2012062005 in a stream at ambient air temperature of 18.5 °C and air humidity of 85 % in the field on 20 June 2012 in Sangzhi County, Hunan Province, China. The advertisement calls of M.spinata were recorded from the specimen CIBLS20190801001 in a stream at ambient air temperature of 19.0 °C and air humidity of 85 % in the field on 1 August 2019 in Leishan County, Guizhou Province, China. SONY PCM-D50 digital sound recorder was used to record within 20 cm of the calling individual. The sound files in wave format were resampled at 48 kHz with sampling depth 24 bits. The sonograms and waveforms were generated by WaveSurfer software (Sjöander and Beskow 2000 ) from which all parameters and characters were measured. Ambient temperature was taken by a digital hygrothermograph.