{"observation":{"id":"25f68454-a8e5-4f74-bd7c-679fc21e76f3","tool":"cleanvoice","tool_name":"Cleanvoice","criterion":"voice-preservation","criterion_name":"Voice preservation","criterion_definition":"After cleanup, whether the voice still sounds natural rather than hollow, robotic, underwater, or artifacted.","criterion_evidence_type":"transformation","criterion_rank_role":"decisive","criterion_rank_role_reason":"A noise cleaner must reduce noise without damaging the voice; if the result sounds hollow or robotic, it fails the main use case. (3 of 3 judges)","scenario":"indoor-air-conditioner-noise","scenario_name":"Indoor Air Conditioner Noise","group_tag":"background-noise-removal","scenario_description":"A real-world indoor speech recording with a single continuous air conditioner noise source, used to test predictable HVAC noise reduction while preserving natural vocal quality.","modality":"audio","input_text":null,"input_artifact_refs":[{"alt":null,"url":"https://d3epheqghktydj.cloudfront.net/veed-veed-input-background-noise-test-clip-16b1fe4db1f0.mp4","role":"input"}],"stresses":["Removal of continuous HVAC noise","Speech preservation","Consistent background-noise suppression","Natural voice quality retention","No manual enhancement"],"verdict":"struggled","score":null,"score_total":null,"note":"Preserved intelligibility, but the output voice sounded artificial and somewhat robotic compared with the original recording.","evidence_state":"verified","source":null,"artifacts":[{"url":"https://d3epheqghktydj.cloudfront.net/research-media-ai-20direction-20ac-20on-20fan-20off-20n-6c2d2abb1f58.wav","role":"input","alt":null},{"url":"https://d3epheqghktydj.cloudfront.net/research-media-ai-direction-ac-on-fan-off-noise-from-no-a066065d1845.wav","role":"output","alt":null}],"run_id":"72972002-7bcb-4593-a3ad-83194779bfb9","study_title":"Remove Background Noise from Audio and Video Recordings Using AI","study_kind":"generation","research_task":"86ba6cyhe","tested_at":null,"completeness":"input-and-output","input":{"state":"files","text":null,"files":[{"url":"https://d3epheqghktydj.cloudfront.net/veed-veed-input-background-noise-test-clip-16b1fe4db1f0.mp4","filename":"veed-veed-input-background-noise-test-clip-16b1fe4db1f0.mp4","alt":"Indoor Air Conditioner Noise","role":"input"}],"modality":"audio","stresses":["Removal of continuous HVAC noise","Speech preservation","Consistent background-noise suppression","Natural voice quality retention","No manual enhancement"]},"tool_page_slug":"cleanvoice","tool_url":"https://aidemos.com/tools/cleanvoice","permalink":"https://aidemos.com/evidence/25f68454-a8e5-4f74-bd7c-679fc21e76f3","api_url":"https://ai.aidemos.com/v1/observations/25f68454-a8e5-4f74-bd7c-679fc21e76f3"},"peers":[{"id":"39436dbc-2bd9-4b4c-af87-3bf859f16a05","tool":"adobe-podcast-enhance","tool_name":"Adobe Podcast Enhance","verdict":"struggled","score":null,"score_total":null,"note":"The tool noticeably changed the original voice tone and character; speech stayed understandable, but the natural voice quality was not preserved well.","artifact_count":2,"thumbnail":"https://d3epheqghktydj.cloudfront.net/adobe-podcast-enhance-ai-direction-ac-on-fan-off-noise-from-no-cc3485214a73.wav","evidence_url":"https://aidemos.com/evidence/39436dbc-2bd9-4b4c-af87-3bf859f16a05"},{"id":"3aed7db1-b9d3-4e62-97f2-73ee466343ea","tool":"audo-studio","tool_name":"Audo Studio","verdict":"worked","score":null,"score_total":null,"note":"Kept the speaker's voice natural and clear without robotic, metallic, or overly processed artifacts.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/audo-studio-audo-studio-ai-direction-ac-on-fan-off-n-f4a260e44fb4.mp3","evidence_url":"https://aidemos.com/evidence/3aed7db1-b9d3-4e62-97f2-73ee466343ea"},{"id":"c67f657d-927a-4f86-b862-98eb1e82cfc9","tool":"auphonic","tool_name":"Auphonic","verdict":"struggled","score":null,"score_total":null,"note":"The output voice became louder and slightly robotic, which reduced the speaker's natural voice characteristics.","artifact_count":2,"thumbnail":"https://d3epheqghktydj.cloudfront.net/cleanvoice-ai-direction-ac-on-fan-off-noise-from-no-6c2d2abb1f58.wav","evidence_url":"https://aidemos.com/evidence/c67f657d-927a-4f86-b862-98eb1e82cfc9"},{"id":"6dea7a0d-4027-4dce-aa53-47ef2af12942","tool":"elevenlabs-voice-isolator","tool_name":"ElevenLabs Voice Isolator","verdict":"worked","score":null,"score_total":null,"note":"The speaker's voice remained natural and clear after processing, with no significant distortion, robotic artifacts, or unnatural changes.","artifact_count":1,"thumbnail":"https://d3epheqghktydj.cloudfront.net/elevenlabs-voice-isolator-elevenlabs-voice-isolator-ai-direction-a-e1b73f469fa5.mp3","evidence_url":"https://aidemos.com/evidence/6dea7a0d-4027-4dce-aa53-47ef2af12942"},{"id":"9f915107-d1fe-48ee-aab7-2287be6b1c2a","tool":"noise-remover","tool_name":"Noise Remover","verdict":"mixed","score":null,"score_total":null,"note":"Leaves the voice generally natural, but automatically lowers speech volume around 0:20 and 0:24-0:25, introducing a voice-level artifact.","artifact_count":2,"thumbnail":"https://d3epheqghktydj.cloudfront.net/noise-remover-ai-direction-ac-on-fan-off-noise-from-no-fedb12943923.wav","evidence_url":"https://aidemos.com/evidence/9f915107-d1fe-48ee-aab7-2287be6b1c2a"}],"other_criteria":[{"id":"57b47cbe-465e-4fd3-84aa-bb1e5ff54c8c","criterion":"handling-different-noise-types","criterion_name":"Handling different noise types","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"Handled continuous background noises effectively, including AC hum and breathing sounds, and performed strongly against low-frequency environmental noise.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/57b47cbe-465e-4fd3-84aa-bb1e5ff54c8c"},{"id":"add666c6-07f4-4621-83f2-14b59af7db8a","criterion":"noise-removal-effectiveness","criterion_name":"Noise removal effectiveness","rank_role":"decisive","verdict":"worked","score":null,"score_total":null,"note":"Removed constant AC noise and most breathing noise, producing output that sounded significantly cleaner than the input.","artifact_count":2,"evidence_url":"https://aidemos.com/evidence/add666c6-07f4-4621-83f2-14b59af7db8a"}],"appears_in":[{"page_type":"ranking","slug":"background-noise-removal","title":"Best AI Tools to Remove Background Noise from Audio and Video Recordings","url":"https://aidemos.com/best/background-noise-removal","binding":"run"},{"page_type":"tool","slug":"adobe-podcast-enhance","title":null,"url":"https://aidemos.com/tools/adobe-podcast-enhance","binding":"run"},{"page_type":"tool","slug":"audo-studio","title":null,"url":"https://aidemos.com/tools/audo-studio","binding":"run"},{"page_type":"tool","slug":"auphonic","title":null,"url":"https://aidemos.com/tools/auphonic","binding":"run"},{"page_type":"tool","slug":"capcut","title":null,"url":"https://aidemos.com/tools/capcut","binding":"run"},{"page_type":"tool","slug":"cleanvoice","title":null,"url":"https://aidemos.com/tools/cleanvoice","binding":"run"},{"page_type":"tool","slug":"elevenlabs-voice-isolator","title":null,"url":"https://aidemos.com/tools/elevenlabs-voice-isolator","binding":"run"},{"page_type":"tool","slug":"noise-remover","title":null,"url":"https://aidemos.com/tools/noise-remover","binding":"run"},{"page_type":"tool","slug":"premiere-pro","title":null,"url":"https://aidemos.com/tools/premiere-pro","binding":"run"}],"same_scenario":[{"id":"39436dbc-2bd9-4b4c-af87-3bf859f16a05","tool":"adobe-podcast-enhance","tool_name":"Adobe Podcast Enhance","verdict":"struggled","score":null,"score_total":null,"note":"The tool noticeably changed the original voice tone and character; speech stayed understandable, but the natural voice quality was not preserved well."},{"id":"3aed7db1-b9d3-4e62-97f2-73ee466343ea","tool":"audo-studio","tool_name":"Audo Studio","verdict":"worked","score":null,"score_total":null,"note":"Kept the speaker's voice natural and clear without robotic, metallic, or overly processed artifacts."},{"id":"c67f657d-927a-4f86-b862-98eb1e82cfc9","tool":"auphonic","tool_name":"Auphonic","verdict":"struggled","score":null,"score_total":null,"note":"The output voice became louder and slightly robotic, which reduced the speaker's natural voice characteristics."},{"id":"6dea7a0d-4027-4dce-aa53-47ef2af12942","tool":"elevenlabs-voice-isolator","tool_name":"ElevenLabs Voice Isolator","verdict":"worked","score":null,"score_total":null,"note":"The speaker's voice remained natural and clear after processing, with no significant distortion, robotic artifacts, or unnatural changes."},{"id":"9f915107-d1fe-48ee-aab7-2287be6b1c2a","tool":"noise-remover","tool_name":"Noise Remover","verdict":"mixed","score":null,"score_total":null,"note":"Leaves the voice generally natural, but automatically lowers speech volume around 0:20 and 0:24-0:25, introducing a voice-level artifact."}]}