TY - GEN
T1 - A Study on Digital Watermarks for Audio Signals Using Phase of Frequency Signals in Addition to the Other Methods
AU - Takahashi, Kako
AU - Miyazaki, Takeru
AU - Araki, Shunsuke
AU - Uehara, Satoshi
AU - Nogami, Yasuyuki
N1 - Funding Information:
of each real part and imaginary part. At the red value in the upper row, the values of the real part and the imaginary part are very close. Since it is possible that misdetections have occurred because the values are close, the LPF is applied to the watermarked signals to increase the difference between the close values for improving misdetections. Let A3′(ω) and A1/3′(ω) be the watermarked signals applied by the LPF at 3k0 and k0/3, respectively. Next, if a result in Table V is the red part, then we exchange the detected values which is obtained from signals applied by the LPF and compare the values A3′(ω), A1/3′(ω) with their values. Otherwise, we compare them with the values in Table III. From Table IV, we can find that the detections were correct except for the two circled points. Therefore, the detection rate increased to 80% by the LPF and the exchanging method. IV. CONCLUSION In this research, we think that the watermark information was expanded and the confidentiality was improved by adding the embedding method to the phase to the system of the previous research. However, the detection rate for the phase is not sufficient and needs to be improved. The reason may be that the imaginary part of the watermark information is not saved in the output file. In the future, we would like to solve these problems and complete the system. ACKNOWLEDGMENT This work was supported by JSPS KAKENHI Grant Number 20K11796.
Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - In this paper, we focus on a digital watermarking method for voice signals recorded by a digital voice recorder especially in conferences. We will discuss some requirements for detecting falsifications in the voice signal, because the conference record has the probability that a conclusion is changed for only a falsification in a little time interval. Then, we will propose an enhanced watermarking scheme using phase of frequency signal in addition to our previous methods, and assess its soundness.
AB - In this paper, we focus on a digital watermarking method for voice signals recorded by a digital voice recorder especially in conferences. We will discuss some requirements for detecting falsifications in the voice signal, because the conference record has the probability that a conclusion is changed for only a falsification in a little time interval. Then, we will propose an enhanced watermarking scheme using phase of frequency signal in addition to our previous methods, and assess its soundness.
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U2 - 10.1109/ICCE-TW52618.2021.9602917
DO - 10.1109/ICCE-TW52618.2021.9602917
M3 - Conference contribution
AN - SCOPUS:85123053156
T3 - 2021 IEEE International Conference on Consumer Electronics-Taiwan, ICCE-TW 2021
BT - 2021 IEEE International Conference on Consumer Electronics-Taiwan, ICCE-TW 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 8th IEEE International Conference on Consumer Electronics-Taiwan, ICCE-TW 2021
Y2 - 15 September 2021 through 17 September 2021
ER -