[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-42779-en":3,"doc-seo-42779-105":30,"detail-sidebar-cat-0-en-105":91},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":20,"is_deleted":4,"is_public":21,"is_downloadable":21,"audit_status":21,"page_count":22,"language":23,"language_code":24,"site_id":25,"html_lang":24,"table_of_contents":26,"faqs":27,"seo_title":13,"seo_description":14,"update_tm":28,"read_time":29},42779,1099514068365,"Aurelia","https://ap-avatar.wpscdn.com/avatar/10000253d8d9f28188e?_k=1776742907772140068",8,"Research & Report","High Capacity and Inaudibility Audio Steganography Scheme","Steganography embeds secret messages into an innocuous audio cover signal to evade detection, balancing competing goals of security, capacity, robustness, and imperceptibility. The scheme presented uses a wavelet packet transform approach with adaptive hiding in least significant bits, where embedding decisions depend on cover-sample strength and bits block matching between message and cover. Experimental results report message embedding up to 42% of total cover size with SNR at least 50 dB, and message recovery without the original audio cover.","High Capacity and InaudibilityAudioSteganography Scheme  \nHaider Ismael Shahadi Electronic and Communication Engineering Dept.  \nTenaga National University (UNITEN) Kajang, Malaysia [haider_almayaly@yahoo.com](haider_almayaly@yahoo.com)  \nRazali Jidin  \nElectronic and Communication Engineering Dept.  \nTenaga National University (UNITEN) Kajang, Malaysia [razali@uniten.edu.my](razali@uniten.edu.my)  \nAbstract—Steganography is an information hiding technique where secret message is embedded into unsuspicious cover signal. Measurement of good steganography algorithm includes security, capacity, robustness and imperceptibility. These measures are contradicted, therefore improving one, affects the others. In this paper, we propose a new high capacity audio steganography algorithm based on the wavelet packet transform with adaptive hiding in least significant bits. The adaptive hiding is determined depend on the cover samples strength and bits block matching between message and cover signals. The results show that message can be embedded up to 42 % of the total size of the cover audio signal with at least of 50 dB signal to noise ratio.  \nKeywords-: Audio Steganography, Wavelet Packet Transform, Bits Block Matching, Inaudible Steganography, High capacity Steganography.  \nI. INTRODUCTION  \nIn the present era of information technology, eavesdropping can be reduced by employing cryptography or/and steganography. Steganography is a process of embedding secret messages in a cover signal to avoid illegal detection [1] . Steganography differs from cryptography in term of message visibility. It hides secret messages totally compared to cryptography where the secret message is still visible [2] .  \nSteganography is frequently used in covert communication such as military and government communications. Often it requires relatively high payloads when compared to watermarking. The major requirements that should be satisfied for good steganography algorithms include perceptual transparency, payload or capacity and robustness [4] . High capacity is considered as an important aspect for steganography when compared to watermarking. For watermarking, robustness should be a dominant factor. Improvement for one of the mentioned requirements will tend to degrade the other performances as they are contradictory according to the magic triangle [5] .  \nIn recently years many techniques have been developed for information hiding [4, 7, 8], and most of these techniques used either image and video media but rarely use audio signal as a cover signal especially in high rate of data embedding, most likely due to Human Auditory System (HAS) which is more sensitive compared to the Human  \nVisual System (HVS) [8] . Although adopting audio signals as a cover signals may yield inferior inaudible performance, there are still suitable features such as transitory and unpredictability that makes sound signal as a suitable secure cover signal.  \nIn this paper we proposed a new steganography algorithm that has high capacity and high output quality. The proposed algorithm is based on discrete wavelet packet transform (DWPT) with adaptive hiding in least significant bits. The adaptive hiding is determined depend on the cover samples strength and bits block matching between message and cover signals. The output stego-signal has Signal to Noise Ratio (SNR) above of 50 dB for the input capacity 300 kb/sec (this forms more than 42 % from the input file size) . The message recovery process does not require original audio cover signal, also this algorithm has good security due to the arbitrary distribution of the secret message blocks in embedding process instead of a known embedded message distribution in many stego-algorithms.  \nII. RELATED WORK  \nGenerally audio steganography and watermarking can be classified according to the embedding domain either in time or transform domain. The simplest hiding technique in time domain with acceptable capacity is the Least Significant Bits","cbCaithSSVSRsPPZ","https://ap.wps.com/l/cbCaithSSVSRsPPZ","pdf",342897,2,1,6,"English","en",105,"# Introduction\n# Related Work","[{\"question\":\"What is steganography and how does it differ from cryptography?\",\"answer\":\"Steganography embeds secret messages into a cover signal so the hidden content is not visible, reducing illegal detection. Cryptography keeps the message visible, while steganography hides it completely within the cover.\"},{\"question\":\"What embedding method does the proposed high-capacity audio steganography scheme use?\",\"answer\":\"It is based on the wavelet packet transform with adaptive hiding in least significant bits. The hiding adapts to cover-sample strength and uses bits block matching between message and cover signals.\"},{\"question\":\"What performance results does the paper report for the proposed scheme?\",\"answer\":\"The paper reports embedding up to 42% of the cover audio size with an SNR of at least 50 dB. It also states that message recovery does not require the original audio cover signal and that security is improved via arbitrary distribution of message blocks during embedding.\"}]",1783362070,15,{"code":4,"msg":31,"data":32},"ok",{"site_id":25,"language":24,"slug":33,"title":13,"keywords":34,"description":14,"schema_data":35,"social_meta":86,"head_meta":88,"extra_data":90,"updated_unix":28},"high-capacity-and-inaudibility-audio-steganography-scheme","",{"@graph":36,"@context":85},[37,53,68],{"@type":38,"itemListElement":39},"BreadcrumbList",[40,44,47,50],{"item":41,"name":42,"@type":43,"position":21},"https://docshare.wps.com","Home","ListItem",{"item":45,"name":46,"@type":43,"position":20},"https://docshare.wps.com/document/","Document",{"item":48,"name":12,"@type":43,"position":49},"https://docshare.wps.com/document/research-report/",3,{"item":51,"name":13,"@type":43,"position":52},"https://docshare.wps.com/document/high-capacity-and-inaudibility-audio-steganography-scheme/42779/",4,{"url":51,"name":13,"@type":54,"author":55,"headline":13,"publisher":57,"fileFormat":60,"inLanguage":24,"description":14,"dateModified":61,"datePublished":62,"encodingFormat":60,"isAccessibleForFree":63,"interactionStatistic":64},"DigitalDocument",{"name":9,"@type":56},"Person",{"url":41,"name":58,"@type":59},"DocShare","Organization","application/pdf","2026-07-13","2026-07-06",true,{"@type":65,"interactionType":66,"userInteractionCount":20},"InteractionCounter",{"@type":67},"ViewAction",{"@type":69,"mainEntity":70},"FAQPage",[71,77,81],{"name":72,"@type":73,"acceptedAnswer":74},"What is steganography and how does it differ from cryptography?","Question",{"text":75,"@type":76},"Steganography embeds secret messages into a cover signal so the hidden content is not visible, reducing illegal detection. Cryptography keeps the message visible, while steganography hides it completely within the cover.","Answer",{"name":78,"@type":73,"acceptedAnswer":79},"What embedding method does the proposed high-capacity audio steganography scheme use?",{"text":80,"@type":76},"It is based on the wavelet packet transform with adaptive hiding in least significant bits. The hiding adapts to cover-sample strength and uses bits block matching between message and cover signals.",{"name":82,"@type":73,"acceptedAnswer":83},"What performance results does the paper report for the proposed scheme?",{"text":84,"@type":76},"The paper reports embedding up to 42% of the cover audio size with an SNR of at least 50 dB. It also states that message recovery does not require the original audio cover signal and that security is improved via arbitrary distribution of message blocks during embedding.","https://schema.org",{"og:url":51,"og:type":87,"og:title":13,"og:site_name":58,"og:description":14},"article",{"robots":89,"canonical":51},"index,follow",{"doc_id":7,"site_id":25},{"code":4,"msg":5,"data":92},[93,97,101,105,110,114,119,122,127,130,134],{"id":21,"doc_module":4,"doc_module_name":46,"category_name":94,"show_sort_weight":95,"slug":96},"Story & Novel",90,"story-novel",{"id":20,"doc_module":4,"doc_module_name":46,"category_name":98,"show_sort_weight":99,"slug":100},"Literature",80,"literature",{"id":52,"doc_module":4,"doc_module_name":46,"category_name":102,"show_sort_weight":103,"slug":104},"Exam",70,"exam",{"id":106,"doc_module":4,"doc_module_name":46,"category_name":107,"show_sort_weight":108,"slug":109},5,"Comic",60,"comic",{"id":22,"doc_module":4,"doc_module_name":46,"category_name":111,"show_sort_weight":112,"slug":113},"Technology",50,"technology",{"id":115,"doc_module":4,"doc_module_name":46,"category_name":116,"show_sort_weight":117,"slug":118},7,"Healthcare",40,"healthcare",{"id":11,"doc_module":4,"doc_module_name":46,"category_name":12,"show_sort_weight":120,"slug":121},30,"research-report",{"id":123,"doc_module":4,"doc_module_name":46,"category_name":124,"show_sort_weight":125,"slug":126},9,"Religion & Spirituality",20,"religion-spirituality",{"id":125,"doc_module":4,"doc_module_name":46,"category_name":128,"show_sort_weight":125,"slug":129},"World Cup","world-cup",{"id":131,"doc_module":4,"doc_module_name":46,"category_name":132,"show_sort_weight":131,"slug":133},10,"Lifestyle","lifestyle",{"id":135,"doc_module":4,"doc_module_name":46,"category_name":136,"show_sort_weight":106,"slug":137},19,"General","general"]