DIGDH: A Novel Framework of Difference Image Grafting Deep Hiding for Image Data Hiding

Data hiding is the technique of embedding data into video or audio media. With the development of deep neural networks (DNN), the quality of images generated by novel data hiding methods based on DNN is getting better. However, there is still room for the similarity between the original images and the images generated by the DNN models which were trained based on the existing hiding frameworks to improve, and it is hard for the receiver to distinguish whether the container image is from the real sender. We propose a framework by introducing a key_img for using the over-fitting characteristic of DNN and combined with difference image grafting symmetrically, named difference image grafting deep hiding (DIGDH). The key_img can be used to identify whether the container image is from the real sender easily. The experimental results show that without changing the structures of networks, the models trained based on the proposed framework can generate images with higher similarity to original cover and secret images. According to the analysis results of the steganalysis tool named StegExpose, the container images generated by the hiding model trained based on the proposed framework is closer to the random distribution.

Pop vs rock: A comparison study of managing sessions in the recording studio and the influences of genre

This study examined the recording session management approaches of two music producers, Phil Harding and Greg Haver, to ascertain if and how their different approaches impact the outcomes of music production projects. Semi-structured interviews were conducted with each producer to gain insight into their approaches generally, and also, as a point of comparison, their work on the educational Gus Dudgeon Foundation/Joint Audio Media Education Support (GDF/JAMES) summer recording sessions specifically. Thematic analyses of the interviews revealed that the producers’ respective approaches are influenced by the genres in which each predominantly works. Harding, a pop producer, is very systematic. Haver, who is better known for his work in rock, uses an organic approach. Consequently, there were some clear differences in their decision making and organizational strategies at the GDF/JAMES sessions. The producers used different criteria to choose a project/artist. Each used distinctive approaches in pre-production (i.e. work on song arrangements and other technical musical decisions), production (recording) and mixing. Still, both produced pop recordings that largely conform to pop norms. Both recordings have similar pop arrangements and meet commercial standards. Findings provide new understanding of session management techniques that can benefit both music production education and practitioners.

Robust and Blind Audio Watermarking Scheme Based on Genetic Algorithm in Dual Transform Domain

In order to protect the copyright of audio media in cyberspace, a robust and blind audio watermarking scheme based on the genetic algorithm (GA) is proposed in a dual transform domain. A formula for calculating the embedding depth is developed, and two embedding depths with different values are used to represent the “1” and “0” states of the binary watermark, respectively. In the extracting process, the embedding depth in each audio fragment will be calculated and compared with the average embedding depth to determine the watermark bit by bit, so this scheme can blindly extract the watermark without the original audio. GA will be applied to optimize the algorithm parameters for meeting the performance requirements in different applications. Besides, the embedding rule is further optimized to enhance the transparency based on the principle of minimal modification to the audio. Experimental results prove that the payload capacity reaches 172.27 bps, the bit error rate (BER) is 0.1% under the premise that its transparency is higher than 25 dB, and its robustness is strong against many attacks. Significantly, this scheme can adaptively select the algorithm parameters to satisfy the specific performance requirements.

Peningkatan Pembelajaran Materi Cerita Fiksi di Sekolah Dasar melalui Model Numbered Heads Together Dengan Media Audio

<p><em>The learning outcomes of fiction story material for 4th graders of Mandala 02 State Elementary School</em><em> (SDN) Cimanggu District, Cilacap Regency were still low. The researcher applied the numbered heads together (NHT) learning model with audio as a media. This study used a Classroom Action Research (CAR) that designed in two cycles. The results showed that their average value of the class during the pre-test was 52.65, increased in the post-test results to 79.28 with an increase in classical learning completeness from 21.88% to 88.57%. Student learning activities in the first cycle of 73.91% increased in the second cycle to 77.76%. The teacher's performance score had reached the indicator of success with the final score in the first cycle of 82.5 increasing in the second cycle to 84.25. The application of the NHT learning model with audio media could improve Indonesian learning of fiction story material.</em></p>

INTERACTION BETWEEN DUAL TEACHING MEDIA AND MOTIVATION ON THE STUDENTS’ LISTENING ACHIEVEMENT

ABSTRACTThe objectives of this study are to describe the interaction between the results of teaching by audio visual and audio teaching media, and motivation towards the students’ listening. The research design was experimental research by using factorial design 2x2. There were 64 students from grade eighth in 2020/2021 academic year of SMP Al Washliyah 8 Medan as sample of this research. The students were divided into two groups. The first group was treated by using audio visual media and the second group was treated by using audio media. The motivation test was conducted for classifying the students upon the high and low motivation by using questionnaire. Students’ achievement in listening was measured by using multiple choice tests. The data were analyzed by applying Two-ways ANOVA, the results revealed that students’ listening achievement taught by using audio visual media significantly higher than that taught by using audio media and students’ listening achievement with high motivation was higher than students with low motivation. There was significant interaction between dual teaching media and motivation on the students’ listening achievement with Fobserved is lower than Ftable at the level significance α = 0.05 (Fobs = 1.76 < Ftab = 2.81) however, the value of significant level is α = 0.19 higher than 0.05. Thus, both teaching media and motivation significantly affect the students’ listening achievement.Keywords: Teaching Listening, Audio Visual Media, Audio Media, Motivation, Listening Achievement.

THE COMPARISON BETWEEN INTEGRATED AUDIO MEDIA OF YA LAL WATHAN AND POWER POINT MEDIA ON THE STUDENT'S COGNITIVE ABILITY

<p>The use of instructional media is one of the teacher's efforts to create maximum teaching and learning processes. Research on the use of integrated audio media Ya Lal Wathan in this study was carried out because the media used were new and had never been used by previous studies. This study aims to compare the effect of Ya Lal Wathan's integrated audio media and power point media on the cognitive abilities of high school students on Kingdom Plantae material. The study design used the Non-equivalent Control Group Design using a purposive sampling technique. We took all of students in MAN 1 Semarang as population and 2 classes as sample. The instruments used were 20 pre-test questions and 20 post-test questions given in power point and integrated audio class. Data were analyzed by Sign Test. The result of the study showed that there was an equally significant effect between two classes. However, students taught by integrated audio got an average grade in the post-test that is higher than the control class so there is a positive tendency that integrated audio media with Ya Lal Wathan is good for application in learning. It is necessary to innovate our audio media for further research.</p><p> </p>

HearIt: Auditory-Cue-Based Audio Playback Control to Facilitate Information Browsing in Lecture Audio

Students often utilize audio media during online or offline courses. However, lecture audio data are mostly unstructured and extensive, so they are more challenging in information browsing (i.e., chaining, linking, extraction, and evaluation of relevant information). Conventional time-level skip control is limited in auditory information browsing because it is hard to identify the current position and context. This paper presents HearIt, which provides semantic-level skip control with auditory cues for auditory information browsing. With HearIt, users can efficiently change the playback position in the paragraph-level. Furthermore, two auditory cues (positional cue and topical cue) help grasp the current playback and its context without additional visual support. We conducted a pilot study with the prototype of HearIt, and the results show its feasibility and design implications for future research.

An Investigation of Video and Audio to Improve Students' Motivation in Learning Listening during Online Learning at Ban Pongneeb School, Thailand

The importance and usefulness of incorporating video media elements to teach listening have become part of the general understanding and common place in education nowadays (Alonso, 2013; Garcia, 2012; Macwan, 2015). Videos have been widely used in education, with videos of students making it easier to understand the material, and also audio is media to give message toward hearing. As we know that students are always feel trouble before trying listening lessons, or they are always feel bored with listening lessons. The purpose of this study is to examine students’ perception of their motivation in learning listening by using audio media and video media. Motivation is a crucial factor and very important factor in learning, students will not interest in learning if they don’t have any motivation. The participant of this study was four grade students from Ban Pongneeb School, Loei, Thailand. The questionnaire and interview were conducted in collecting the data for this study. The result shows that the majority of the students perceive that video media is a great tool for improving their motivation in learning listening, but an occasional the use of audio media in learning listening should not be rejected.