Advanced soundscape analysis or machine listening are requiring efficient time frequency decompositions. The recent scattering theory is offering a robust hierarchical convolutional decomposition, nevertheless its kernels need to be fixed. The CNN can be seen as the optimal kernel decomposition, nevertheless it requires large amount of training data. This paper aims to show that Chirplet kernel...

あらまし これまでに我々は,周波数領域時空間符号化(FD-STBC)を用いるシングルキャリア(SC)時分割複 信(TDD)伝送のためのマルチブロック周波数領域等化(MB-FDE)を提案し,チャネル推定が理想的なとき高速 フェージング環境下で優れた伝送特性を有することを明らかにした.しかしながら,チャネル推定誤差が存在する 場合には MB-FDE の特性改善効果が低下してしまうという問題点があった.そこで本稿では,最小平均二乗誤差 (MMSE)規範に基づいて複数の 2 次元フィルタを同時に最適化することで,MIMO チャネルの推定と時間変動予 測と同時に実現する適応 2 次元 MIMO チャネル推定を提案する.データ判定後の軟判定データブロックをパイロッ トとして用いる繰り返し処理を組み合わせることによってさらに高い時間追従性を実現できる.繰り返し適応 2 次 元チャネル推定を MB-...

This study investigated the effects of eliciting tasks on listening comprehension among Iranian pre-intermediate English as a foreign language (EFL) learners. To do the current study, 30 participants out of 40 were selected through administering an Oxford Quick Placement Test (OQPT). After that, the participants were divided into two equal groups; one experimental and one control group. Then, a...

Background: Individuals' listening styles differs based on their characters, professions and situations. This study aimed to assess the validity and reliability of Listening Styles Profile- Revised (LSP- R) in Iranian students. Methods: After translating into Persian, LSP-R was employed in a sample of 240 medical and nursing Persian speaking students in Iran. Statistical analysis was performed ...

Learning a foreign language is a challenging process in which learners need motivation and encouragement through the use of modern techniques. The present paper investigates the effects digital stories may have on Iranian pre-intermediate EFL learners’ listening comprehension. To this end, the researchers carried out a quasi-experimental research in a language institution in Tabriz (Iran). In t...

This study aimed at investigating the impact of closed-caption program on listening comprehension of English movies and vocabulary learning. Sixty-four graduate students studying at Shiraz Islamic Azad University were selected as the participants of the study. The participants were divided into two groups: experimental group (with closed caption program) and control group (without closed captio...

This study aimed to compare the effect of listening strategies, namely, metacognitive, cognitive and social/affective strategies, on impulsive and reflective visually impaired EFL learners’ (VILs) listening comprehension. The participants of the study were 58 male and female VILs at pre-intermediate level within the age range of 12-18 in the west of Iran, Khorram Abad. These participants were s...